Ask any bedroom furniture buyer serving the UK, German, or Scandinavian market what their highest-volume bed category is. In most cases, the answer is the same: the ottoman storage bed.
The appeal is straightforward. In a market where the average urban apartment floor area has declined consistently over the past decade — the average new-build apartment in London is 46 m², in Amsterdam 69 m² — under-bed storage is not a luxury feature. It is a practical response to a real space constraint. A bed that doubles as a 400–600-litre storage compartment addresses a problem that no amount of wardrobe organisation can fully solve.
According to Furniture News industry data, ottoman storage beds now account for approximately 35–45% of bed frame unit sales in the UK market, with similar penetration levels across northern and central Europe. In the $600–$1,500 retail price band, they are the dominant bed format. For furniture manufacturers developing product lines for these markets, specifying the correct ottoman bed frame hardware — the mechanism, hinges, and gas springs that make the storage system function reliably — is the decision that determines whether the product performs as marketed or generates warranty claims.
This guide covers everything a furniture manufacturer needs to know before sourcing ottoman bed hardware: the three opening configurations and when to use each, how to calculate the correct gas spring force for your specific bed base weight, hinge selection criteria, EN safety standard requirements for the European market, and the questions to ask your hardware supplier before committing to a production run.
Ottoman beds open in one of three configurations: side-opening, end-opening, or front-opening (sometimes called foot-end or toe-end). Each configuration has distinct implications for the mechanism geometry, the gas spring specification, the required floor space clearance, and the user experience. Choosing the wrong configuration for the room layout your customer is likely to have is one of the most common product development mistakes in this category.
How it works: The bed base is hinged along one long side (left or right, specified from the foot-end perspective). The base lifts from the opposite long side, rotating upward and away from the hinge axis. The gas springs are mounted along the hinge side of the frame, providing upward force as the base rotates open.
Opening geometry: To fully open a side-opening ottoman, the user needs approximately 600–800 mm of clear floor space on the lifting side of the bed. The base rotates to approximately 70–85° from horizontal in the open position — sufficient for comfortable access to the storage compartment without the base contacting the wall (assuming standard 400–500 mm bed-to-wall clearance).
Structural requirement: Side-opening places the highest bending load on the hinge axis — the full weight of the bed base (typically 25–50 kg depending on material and size) creates a moment arm equal to half the bed width (750–900 mm for a double). Hinge selection for side-opening must account for this load: Veitop's bed hinge series for side-opening applications is rated to 80–120 kg bed base weight depending on hinge spacing and frame mounting.
Best suited for:
Not suited for:
How it works: The bed base is hinged along the short end (foot end). The base lifts from the head end, rotating upward toward the headboard. Gas springs are mounted at the foot end of the frame.
Opening geometry: End-opening requires approximately 800–1,200 mm of clear floor space at the foot end of the bed (the amount increases with bed length: a 200 cm bed base rotating 75° sweeps a floor arc of approximately 1,100 mm). In practice, this means the bed must not be positioned against a wall at the foot end, and there must be sufficient room between the foot of the bed and any opposite wall or furniture.
Structural advantage: End-opening distributes the hinge load across the full width of the bed frame (typically 1,400–1,800 mm for a double), which significantly reduces the bending moment per hinge compared to side-opening. This allows lighter hinge specifications for the same bed base weight.
Access advantage: End-opening provides access to the full storage compartment width simultaneously, which is operationally convenient — the user can reach any point in the storage volume without repositioning. Side-opening provides access to approximately half the compartment width at a time from the lifting side.
Best suited for:
Not suited for:
How it works: The front panel of the bed base (typically the divan base) pivots forward and down, while the interior base platform slides forward and upward simultaneously. The combined motion creates a larger opening angle with a smaller floor footprint than a single-axis rotation. Gas springs provide controlled lift assistance throughout the motion arc.
Mechanism complexity: This is the most mechanically complex ottoman configuration. It requires a coordinated four-bar linkage mechanism (or equivalent) to produce the simultaneous pivot-and-slide motion, rather than the single-axis rotation of side- and end-opening. The mechanism must be integrated into the divan base frame during manufacture — it is not a field-installed addition.
Space efficiency advantage: The combined motion geometry allows the opening arc to be partially contained within the bed footprint, reducing the required floor clearance compared to a single-axis rotation of the same base length. This makes lift-and-slide the preferred configuration for very space-constrained rooms.
Best suited for:
Configuration Comparison at a Glance:
|
Attribute |
Side-Opening |
End-Opening |
Front Lift-and-Slide |
|
Floor clearance required |
600–800 mm (one side) |
800–1,200 mm (foot end) |
400–600 mm (front) |
|
Access to storage |
Half-width at a time |
Full width simultaneously |
Full width simultaneously |
|
Hinge load |
High (long moment arm) |
Lower (distributed) |
Medium (linkage absorbed) |
|
Mechanism complexity |
Low |
Low |
High |
|
Gas spring count |
2–4 depending on base weight |
2–4 |
4–6 |
|
Relative cost |
Lower |
Lower |
Higher |
|
Market preference (EU) |
UK, Benelux, Scandinavia |
Germany, Austria, CEE |
Premium/compact segment |
The gas spring is the component that makes an ottoman bed usable. A correctly specified gas spring allows the bed base to be opened with one hand, holds the base securely in the open position without assistance, and closes with controlled resistance — not a free-fall slam.
An incorrectly specified gas spring makes the bed either too heavy to open comfortably, unstable in the open position, or dangerously fast-closing. All three outcomes generate warranty claims and returns.
Gas spring force is measured in Newtons (N). The correct force value is calculated from the geometry of the specific bed design — it is not a standard value that can be assumed from the product category.
The gas spring must generate a moment (rotational force) around the hinge axis that exceeds the moment generated by the weight of the bed base at all points in the opening arc — specifically at the point in the arc where the ratio of weight moment to gas spring moment is highest (typically 15–30° from horizontal for side-opening configurations).
Variables required for calculation:
|
Variable |
Description |
Typical Range |
|
W |
Total bed base weight (kg) |
25–60 kg (depending on material, size) |
|
L |
Half-width of bed base (side-opening) or half-length (end-opening) in metres |
0.70–0.95 m |
|
d |
Perpendicular distance from gas spring mounting point to hinge axis (m) |
0.08–0.18 m |
|
θ |
Opening angle at which calculation is performed (typically 15–30°) |
15–30° |
|
n |
Number of gas springs |
2–4 |
Simplified moment-balance formula:
Where:
Worked example — UK King Size, Side-Opening:
Standard gas spring force values are available in increments of 100–150 N. For this example, the correct specification is 1,400 N per spring (rounding up to the nearest available value to ensure the base lifts at the critical angle without requiring excessive user force).
Important: always weigh the actual production base, not the design estimate. Frame weight varies by ±10–15% between design estimate and production reality due to material density variation, additional blocking, and upholstery adhesive weight. A 10% weight underestimate on a 45 kg base translates to a 4.5 kg error — approximately 44 N of moment force that the specified spring cannot compensate, resulting in a base that feels heavy in the last 20° of closing.
The required gas spring stroke (extension travel in mm) is determined by the geometry of the mounting points and the required opening angle. For standard ottoman beds, stroke lengths of 100–250 mm are typical; the exact value must be confirmed against the specific frame geometry.
Critical mounting dimension: The gas spring must be mounted so that it reaches its fully extended position (maximum stroke) when the bed base is 5–10° past vertical — not at the maximum opening angle. If the spring reaches full extension at 75° opening and the base continues to 85°, the base will fall backward past vertical without spring support, potentially damaging the mechanism or injuring the user.
Veitop Hardware provides gas spring selection support for OEM ottoman bed programmes: submit your frame geometry and measured base weight, and Veitop's engineering team will calculate and recommend the correct force value and stroke for your specific design.
The hinge is the structural pivot of the entire ottoman system. It bears the full weight of the bed base in rotation, resists the torsional load of the gas spring force, and must maintain dimensional stability across the product's service life — typically specified at a minimum of 10,000 opening cycles under EN durability testing.
Load rating (kg): The hinge must be rated to carry the full bed base weight with an appropriate safety factor. For a 45 kg bed base on a side-opening configuration, the hinge sees a load equivalent to the full base weight at the critical opening angle. Veitop's ottoman bed hinge series is available in 60 kg, 80 kg, 100 kg, and 120 kg rated configurations — select the rating above your calculated base weight with a minimum 30% safety margin.
|
Bed Size |
Typical Base Weight |
Recommended Hinge Rating |
|
Single (90×190 cm) |
18–28 kg |
60 kg |
|
Double (135×190 cm) |
25–38 kg |
80 kg |
|
King (150×200 cm) |
35–50 kg |
100 kg |
|
Super King (180×200 cm) |
45–60 kg |
120 kg |
|
EU King (160×200 cm) |
38–52 kg |
100–120 kg |
Material and surface treatment: Hinges for ottoman beds are typically cold-rolled steel (for standard residential applications) or stainless steel (for higher-humidity environments or premium product specifications). Surface treatment options — black powder coat, zinc electroplate, nickel plate — are primarily aesthetic but also affect corrosion resistance for the product's rated service life.
Hinge spacing and count: For side-opening configurations, a minimum of two hinges is required for structural stability; three hinges are recommended for beds above 150 cm in width or for base weights above 40 kg. Hinge spacing should be approximately equal along the hinge axis — equal-spacing distributes the bending load evenly and prevents the frame from racking under load.
Mounting interface: The hinge mounting plate dimensions (bolt circle, bolt diameter, plate thickness) must be compatible with the frame material and frame section size. For MDF or plywood frames, minimum plate width of 60 mm and M6 bolts with reinforcing inserts are recommended. For steel frame construction, direct bolt or weld attachment is appropriate.
Any ottoman storage bed sold in the European Union or United Kingdom must comply with the General Product Safety Directive (GPSD, now transitioning to GPSR — General Product Safety Regulation, effective December 2024) and the relevant harmonised technical standards for domestic beds.
Primary standards for ottoman bed hardware:
EN 1725:1998 — Domestic Furniture: Beds and Mattress Bases The core safety and durability standard for domestic beds in the European market. Relevant test requirements for ottoman hardware:
Clause 5.3 — Strength and Durability of Storage System:
Clause 5.4 — Static Load on Bed Base:
Clause 6 — Stability:
EN 747 (bunk beds — applicable for loft beds with storage): If the ottoman base is integrated into a loft or bunk configuration, additional safety margins apply.
Gas Spring Safety Requirements: Gas springs for ottoman bed applications must comply with EN ISO 8434 for hydraulic and pneumatic fittings, and must be certified to withstand the maximum load at full extension without seal failure. Veitop's ottoman gas spring series is rated to 110% of nominal force at full extension — the 10% overage provides a safety margin against gas pressure loss over the product's service life.
Finger-trap hazard mitigation: EN 1725 and the GPSR both require that closing mechanisms do not create finger-trap hazards — points where a user's fingers could be pinched between the closing base and the fixed frame. Ottoman bed designs must either:
Veitop's bed lift up mechanism series includes integrated slow-close damper options for designs targeting EN 1725 compliance.
CE Marking and Declaration of Conformity: Ottoman beds sold in the EU must carry CE marking supported by a Declaration of Conformity that references the applicable standards. For furniture manufacturers importing hardware from China, the Declaration of Conformity is the manufacturer's (or EU importer's) legal responsibility — not the hardware supplier's. Veitop provides component-level test reports and material certificates that support the furniture manufacturer's own DoC preparation.
For furniture manufacturers developing a new ottoman bed programme or qualifying a new hardware supplier, this checklist covers the specification variables that must be confirmed before production approval.
Veitop Hardware's ottoman bed hardware range covers all three opening configurations across EU, UK, and custom size specifications:
Ottoman Bed Frame Series Full structural frame kits for side-opening and end-opening ottoman beds, in EU single (90×200), double (140×200), queen (160×200), and king (180×200) configurations. Frame material: cold-rolled steel tube, powder-coated black or white. OEM custom sizes and configurations supported with EVT sample in 15 business days.
Bed Lift Up Mechanism (A0202001 series) The A0202001 Adjustable Bed Lift Mechanism is a hydraulic bed storage riser designed for easy installation. Available in weight classes matching standard EU bed sizes. Integrated slow-close damper option available for EN 1725 finger-trap compliance. Compatible with both side-opening and end-opening ottoman frame configurations.
Bed Hinges Series Heavy-duty steel hinges rated 60–120 kg, available in standard side-opening and end-opening geometry. Powder coat and electroplate surface treatment. Mounting plates pre-drilled for M6 bolts. OEM custom hinge geometry for non-standard frame configurations.
Gas Springs Force range: 200 N – 2,000 N in 100 N increments. Stroke range: 80–300 mm. End fittings: ball-and-socket, pin-and-clevis, and trunnion mount. Temperature rating: -20°C to +80°C. Certification: rated to 110% nominal force at full extension.
Browse Ottoman Bed Frame Hardware → | Browse Bed Lift Up Mechanisms → | Browse Bed Hinges →
|
Spec Variable |
Side-Opening |
End-Opening |
Notes |
|
Gas spring force range |
800–2,000 N |
600–1,600 N |
End-opening benefits from wider moment arm |
|
Recommended spring count |
2–4 |
2–4 |
4 springs for base weight > 50 kg |
|
Hinge count minimum |
2 (3 for width > 150 cm) |
2 |
End-opening: 2 hinges always adequate |
|
Min hinge load rating |
Base weight × 1.3 |
Base weight × 1.3 |
Add 25% for contract/hotel specification |
|
Floor clearance required |
650–800 mm (lift side) |
900–1,100 mm (foot end) |
Based on 70–80° opening angle |
|
EN 1725 cycle target |
10,000 cycles |
10,000 cycles |
Veitop rates to 15,000 cycles minimum |
|
Slow-close damper |
Recommended |
Recommended |
Required for EU finger-trap compliance |
|
OEM lead time (standard) |
15 BD (EVT sample) |
15 BD (EVT sample) |
PVT to production: 45–60 BD total |
For more detail on specific hardware categories mentioned in this guide:
Request Free Samples → | Get a Custom OEM Quote →
What is the difference between side-opening and end-opening ottoman beds? Side-opening ottoman beds hinge along one long side of the bed; the base lifts from the opposite long side. End-opening beds hinge at the foot end; the base lifts from the head end toward the headboard. The primary practical difference is floor space requirement: side-opening needs 650–800 mm of clear space on the lifting side, while end-opening needs 900–1,100 mm at the foot end. Side-opening places higher bending load on the hinge (larger moment arm), requiring heavier hinge specifications for the same base weight. End-opening provides access to the full storage width simultaneously. Market preference varies by region: UK and Benelux favour side-opening; Germany and Central Europe more commonly specify end-opening.
How do I calculate the correct gas spring force for an ottoman bed? The gas spring force must be sufficient to overcome the rotational moment created by the bed base weight at the critical opening angle (typically 15–30° from horizontal). The calculation is: F = (W × 9.81 × L × cos θ) ÷ (n × d), where W is bed base weight in kg, L is the moment arm length in metres (half the bed width for side-opening), θ is the critical angle, n is the number of springs, and d is the perpendicular distance from spring to hinge axis. Always use the measured weight of the actual production base — design estimates are typically 10–15% below actual weight, which will result in a base that feels heavy in the final closing arc. Round the calculated force up to the nearest available standard increment (typically 100 N).
What EN standard applies to ottoman storage beds sold in Europe? EN 1725:1998 (Domestic Furniture: Beds and Mattress Bases) is the primary harmonised standard for domestic ottoman beds in the EU and UK. Key requirements for the storage mechanism: 10,000 opening/closing cycles without failure at 1.25× the bed base weight; 1,500 N static load on the closed base without fracture or >10 mm permanent set; stability under 50 N lateral load in the open position; and finger-trap prevention (either slow-close damper limiting closing speed to ≤0.3 m/s in the final 150 mm, or minimum 25 mm clearance between all moving and fixed parts throughout the closing arc). The EU's General Product Safety Regulation (GPSR), effective December 2024, requires a Declaration of Conformity supported by these test results.
How many gas springs does an ottoman bed need? Most standard double, queen, and king ottoman beds use 2–4 gas springs. Two springs are adequate for bed bases below 35 kg; four springs are recommended for bases above 45 kg, for super king configurations (180 cm+), or for designs where the gas spring mounting geometry results in a short perpendicular distance to the hinge axis (which requires higher spring force to compensate). Using four springs at a lower individual force value is generally preferred over two springs at a very high force value: the lower-force springs are lighter, easier to handle during installation, and exert less stress on the mounting brackets.
What should I look for when sourcing ottoman bed hinges from China? Five specification criteria: (1) Load rating — the hinge must be rated above your bed base weight with at least 30% safety margin; (2) Cycle life — minimum 10,000 cycles per EN 1725, request the test report; (3) Material — cold-rolled steel minimum for residential; stainless steel for premium or high-humidity applications; (4) Mounting plate dimensions — must match your frame material and section (MDF frames require wider plates and reinforcing inserts; steel frames allow smaller plates with direct bolt attachment); (5) Surface treatment quality — request a cross-cut adhesion test result (ISO 2409) and salt spray result (ISO 9227, minimum 120 hours for indoor residential hardware).
Can Veitop Hardware supply ottoman bed frames in custom sizes outside EU/UK standard dimensions? Yes. Veitop's standard ottoman bed frame range covers EU single (90×200), double (140×200), queen (160×200), and king (180×200), plus UK standard sizes (135×190, 150×200, 180×200). Custom sizes — including US standard dimensions (queen 153×203, king 193×203), Australian sizes, and fully bespoke dimensions for project specification — are supported through OEM development. An EVT (Engineering Validation Testing) sample is produced within 15 business days of a confirmed brief and NDA. Custom gas spring specification and hinge geometry are calculated and confirmed as part of the OEM development process, not assumed from standard product values.
What is the minimum order quantity for ottoman bed hardware from Veitop? For standard catalogue configurations (EU/UK sizes, standard opening type, standard surface treatment), MOQ is 50 sets for the complete ottoman frame kit. For gas springs, MOQ is 100 pieces per force/stroke specification. For bed hinges, MOQ is 100 pairs per specification. For OEM custom configurations, MOQ is confirmed at the quotation stage based on tooling requirements — typically 100–200 sets for frame configurations using existing tooling with modified dimensions, and 300–500 sets for configurations requiring new tooling. Sample sets (2–5 units) are available for qualification testing prior to production commitment, with sample cost credited against the first production order.
