Key Specifications
7-Second Opening
Opens in as little as 7 seconds for rapid vehicle access and low heat loss.
Clear Threshold
No bottom guide track required, leaving a completely flat, obstruction-free floor.
High Security
Heavy-duty steel leaf construction with multi-point locking for commercial peace of mind.
110,000+ Cycle Tested
Tested to over 110,000 continuous cycles for long-term dependability.
Fast-Acting Speed & Drive Mechanics
Engineered by Jewers Doors for high-frequency access, the bi-fold system delivers ultra-fast cycle times to retain internal hall heat and keep vehicles moving.
​
-
7-Second Opening: Powerful electric drive options open the door leaves fully in as little as 7 seconds.
-
Instant Manual Release: Simple disengage lever allows quick manual operation in under 2 seconds during a mains power loss.
-
Side-Hung Folding: Folds cleanly to the side without intruding into interior headroom or working space.
Flat Panel
Polyurethane Insulation
Constructed using 52mm (or optional 62mm) thick flat composite steel panels with a high-density, CFC-free polyurethane foam core to maximize building insulation.
​
-
Thermal Insulation: Significantly reduces heat loss across wide openings, helping lower winter heating bills.
-
Acoustic Dampening: High-density core provides up to 25dB sound reduction between internal work bays and external traffic.
-
Weather-Tight Seals: Full perimeter double-rubber and brush seals block wind and heavy draughts.
Full Height Pass Doors
& Vision Glazing
Customize your bi-fold configuration with full-height access leaves and toughened glass panels for natural light and safety.
​
-
Integral Wicket Doors: Dedicated pass door leaf allows staff to enter without opening the main automated leaves.
-
Double-Glazed Vision Panels: Toughened or laminated glass windows improve site safety and daylight exposure inside the building.
-
Durable Powder Coating: Finished in a wide range of standard Plastisol or custom RAL polyester powder coat colours.
Expert Survey
& Local Fitting
Behind Closed Doors Ltd provides complete end-to-end service across Oxfordshire and surrounding areas so you never have to worry about installation details.
​
-
Free Site Assessment: On-site measurement to check side clearance, lintel fixing, and motor sizing.
-
Qualified Installation: Fitted by experienced engineers to guarantee smooth, compliant operation.
-
Ongoing Service: Planned preventative maintenance and emergency support to keep your doors running smoothly.
