Hatch
- 47mm thick door-leaves formed from 1mm electrogalvanised (zinc-coated) steel skins with proprietary core material (insulated) and reinforced with internal C-profiles stiffeners.
- Frames are formed from 1.5~2mm thick electrogalvanised (zinc-coated) steel, complete with mortar boxes and preparations for hinge, closer and strike.
- Fire rating of up to 4 hours BS 476 Part 22