The original and the best, our aluminium Redlam MK 1 panic bolt is the easiest way to secure a fire or emergency exit door but still comply with Fire Regulations. Simply break the tube with the hammer and chain which enables the door to slide open. • Supplied complete with hammer and chain, screws and a Ceramtube. • Ceramtube does not contain glass (sold separately) so this is suitable for most areas.. • Fitting a simple padlock to the bolt will prevent the tube being removed. • Suitable for schools, swimming pools, industrial units. • Includes, bolt, hammer and chain, Ceramtube and fixing screws. Ceramtube dimensions length 127 mm x diameter 17 mm. Size; Length 165 mm x Height 75 mm x Depth 55 mm.