1 Hour Fire Rated Loft Access Doors
Frame Fitting Size: 542mm x 630mm
Opening Size: 520mm x 580mm
Suitable for use with telescopic loft ladders.
Complies with NHBC. Provides upto 60 minutes fire protection and is Class O surface spread flame classification.
U value 0.82 W/m2k
- Designed to fit between ceiling joists spaced 600mm centres to provide a clear joist opening width of 562mm to be plasterboard lined to give 542mm
- If the roof design does not provide this joist opening width, a suitable opening must be formed
- It is essential that trimmers are installed between the ceiling joists across the end of the frame
- The frame fixes ten screws (supplied) - three through each side and two through each end
- A 50mm tall by 10mm thick protective plasterboard surround is required along all 4 sides of the trimmed opening.