Intumescent Pack to Suit Concealed Overhead Door Closer

Essential addition to concealed overhead door closers when fitting to fire doors.

• Designed for use with the Concealed Cam Action Door Closers (codes 47447 or 84776)
• A legal requirement for fitting with door closers on fire rated doors in order to maintain the door's fire integrity
• Expands in contact with heat to close any gaps in the door caused by morticing the door closers