In new doorsets, both profiles are rebated into the centre of opposing door edges at meeting stiles. Where IMN/IMP Intumescent Fire and Smoke Seals are fitted to an existing door assembly, the stiles of the door are easily rebated. The intumescent fire and smoke seal is interrupted at the hinges and lock/latch striker plate positions, and protection at these points is normally not essential for FD30S doors (see BS 8214).
