For interior construction (drywall construction) without fire protection requirements with a paneling thickness of 12.5 mm. 2. Create an opening for the inspection flap, e.g. B. cleanly cut out the wall or ceiling with a jigsaw (tip: opening approx. 6 mm larger than the clear installation dimension). 4. Push the frame diagonally through the existing opening and insert it. Attention: Make sure the surface is clean! 7. Then screw the installation frame on each side (up to 300 mm installation frame length = 2 screws 8. Screw in drywall screws (screw head must be in the ceiling or be slightly recessed into the wall plate) and cover the protruding screw tips on the back with the enclosed protective caps. 11. Carefully clean the inside of the installation frame and flap cover, insert the flap co.
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