1mm Interdens Intumescent Kit for Deadlocks - & - 45-57mm Backset - Mono Ammonium Phosphate

1mm interdens intumescent deadlock kit expands when exposed to high temperatures helping seal gaps around deadlocks in FD30 and FD60 fire doors
Designed for deadlocks with 45 to 57mm backset helping protect the lock recess and maintain fire door performance
High performance intumescent material expands under heat helping restrict the spread of fire through the lock cavity
Self adhesive backing for easy installation allows quick fitting behind the deadlock case during door preparation
Flexible 1mm sheets wrap around the deadlock body providing reliable fire protection within the door rebate
Tested to EN1634-1:2014+A1:2018 and BS476 Part 22:1987 confirming compliance with recognised fire resistance standards