Outdoor Deck Box Gas Struts Pair – 400mm 300N – Heavy Duty Lid Support – 4x L Brackets
✓ IN STOCK - SHIPS TODAY
Upgrade your outdoor storage with a controlled, powerful and reliable lid lifting system. This 400mm 300N gas strut pair is engineered for deck boxes, garden storage boxes and outdoor cushion chests with deeper lids that require extended reach, smooth assisted opening and stable hold-open performance.
📏 Technical Specifications
-
Force Rating: 300N per strut (600N total support per pair)
-
Extended Length: 400mm
-
Stroke Length: 150mm
-
End Fitting: 10mm Ball Socket (M6 threaded ball studs)
-
Bracket Type: 4x Heavy-Duty L Brackets Included
-
Supply: Matched Pair (Left & Right installation)
Recommended Lid Depth: 500–800mm (hinge to front edge)
Suitable Lid Weight: 30–54kg (lid only, when using two struts)
🌿 Designed for Outdoor Storage Systems
This configuration is tailored for outdoor deck boxes and garden storage units where larger, deeper lids need more travel distance and stronger lift assistance.
- Deeper lid designs with longer front reach
- Wind-exposed outdoor installations
- Composite or reinforced timber lid panels
- Storage chests holding cushions, tools or garden equipment
The 300N rating provides strong lift support while maintaining smooth and controlled opening and closing behaviour.
🔩 4x L Bracket Mounting System
This kit includes four reinforced 90° L brackets, providing:
- Improved mounting stability inside plastic or composite deck boxes
- Better alignment for deeper lid frames
- Higher structural support compared to flat bracket-only systems
- Even load distribution across mounting points
Recommended for outdoor storage boxes with internal ribbing, moulded plastic frames or reinforced timber constructions.
🛠 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 100–160mm below the top inside frame (depending on box depth)
- Ensure slight compression when fully closed for correct preload tension
Correct geometry is essential for optimal lifting performance. Improper positioning may reduce lifting efficiency.
⚠ Choosing the Correct Strength
- If your lid weighs less than 30kg → 300N may feel too strong
- If your lid exceeds 54kg → consider 400N options
- If your lid depth exceeds 800mm → consider a longer or higher-force configuration
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
- Plastic deck boxes
- Garden cushion storage chests
- Outdoor patio storage trunks
- Composite or timber garden storage 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 extended-reach, controlled and professional-grade lid support. Order today and upgrade your deck box performance.
