Oversized & Industrial Fire Doors
Oversized fire doors solve the openings that standard door schedules cannot: factory bays, warehouse transfer points, plant room fronts and industrial buildings where equipment has to pass through the compartment line. Above a certain size, the constraints change completely — leaf weight, hinge capacity, frame stiffness, closing force and the coordination between leaves all become the design problem rather than the rating alone. Multi-leaf sets, vision panels and reinforced frames are the usual answers. These openings are quoted individually against the drawing, because a generic size table will not tell you whether the leaf can be hung and closed reliably.
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Points de choix
- Send the drawing, not just a size. Above a certain width, the leaf arrangement is a design decision.
- Confirm the handling equipment available on site; an oversized leaf that cannot be lifted into place stops the programme.
- For multi-leaf sets, the closing sequence needs a coordinator, and the sequence has to match the egress direction.
- Check the structural opening tolerance before production: oversized frames have less room to absorb site deviation.
Questions fréquentes
- What is the largest leaf you can make?
- It depends on the configuration and the rating required. The limit is confirmed per opening against the certificate, so the answer comes with the quotation.
- Can oversized doors be glazed?
- Yes, vision panels and glazed sections can be included where the assembly's certification covers them.
- How are they shipped?
- Large leaves and frames are packed separately and braced for container transport. The packing method is agreed per order.
- Do they need powered operation?
- Above a certain weight, manual operation becomes impractical. Powered operation is considered together with the leaf size and the egress requirement.
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- Oversized & Industrial Fire DoorsOversized fire doors solve the openings that standard door schedules cannot: factory bays, warehouse transfer points, plant room fronts and industrial buildings where equipment has to pass through the compartment line