Outdoor Deck Box Gas Struts Pair – 450mm 400N – Heavy Duty Lid Support – 4x L Brackets
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Upgrade your outdoor storage with a maximum-strength, controlled and reliable lid lifting system. This 450mm 400N gas strut pair is engineered for large deck boxes, garden storage units and outdoor cushion chests with deep, heavy lids requiring extended reach and powerful lift assistance.
📏 Technical Specifications
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Force Rating: 400N per strut (800N total support per pair)
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Extended Length: 450mm
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Stroke Length: 185mm
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End Fitting: 10mm Ball Socket (M6 threaded ball studs)
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Bracket Type: 4x Heavy-Duty L Brackets Included
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Supply: Matched Pair (Left & Right installation)
Recommended Lid Depth: 600–900mm (hinge to front edge)
Suitable Lid Weight: 40–72kg (lid only, when using two struts)
🌿 Designed for Outdoor Storage Systems
This configuration is specifically designed for large outdoor storage systems where extended lid travel distance and strong lifting force are essential.
- Deep and wide lid constructions
- Wind-exposed outdoor installations
- Thick composite, reinforced plastic or timber lids
- Storage units carrying heavier outdoor equipment
The 400N rating delivers powerful and stable lift assistance while maintaining smooth and controlled opening and closing behaviour.
🔩 4x L Bracket Mounting System
This kit includes four reinforced 90° L brackets, providing:
- Superior mounting stability inside deep storage boxes
- Improved structural alignment for large lid frames
- Higher load-bearing strength compared to flat bracket-only systems
- Even load distribution across mounting points
Recommended for reinforced outdoor storage boxes with internal ribbing or timber construction.
🛠 Installation Positioning Guide
- Install one strut on each side of the lid
- Mount approximately 25% down from the hinge on the lid panel
- Position lower bracket 110–170mm below the top inside frame (depending on box depth)
- Ensure slight compression when fully closed for correct preload tension
Correct installation geometry is essential for optimal lifting performance.
⚠ Choosing the Correct Strength
- If your lid weighs less than 40kg → 400N may feel too strong
- If your lid exceeds 72kg → consider reinforced hinge systems
- If your lid depth exceeds 900mm → consider custom-length configurations
Always calculate lid weight without contents. This rating applies to the lid panel only.
🛡 Safety & User Experience Benefits
- Prevents sudden lid drop due to wind or accidental release
- Keeps lid securely open while accessing contents
- Reduces stress on hinges and mounting screws
- Improves long-term durability of outdoor storage systems
🏡 Ideal Applications
- Large plastic deck boxes
- Heavy-duty garden cushion storage chests
- Outdoor patio storage trunks
- Reinforced composite or timber garden units
🇬🇧 AUTORCE Outdoor Performance Standard
- Quality tested for reliable lift performance
- Fast UK dispatch
- 30-day returns on unused items
- UK-based support team
Enhance your outdoor storage with maximum-strength, extended-reach and professional-grade lid support. Order today and upgrade your deck box performance.
