US LOCK 1740 SERIES DOOR CLOSER WITH BACKCHECK SIZE 5 DURONOTIC

Surface applied with hydraulic backcheck & adjustable 50% increase in closing force for draft or pressure conditions
Aluminum body and zinc plated arm assembly
Rack & pinion mechanism
Three separate valves independently adjusts sweep & latch speeds & backcheck
Reversible, size 5
U.L. Listed ANSI A156.4 Grade 1
Imported