Most caulk guns work like door closers!  A simple check drives a rod to dispense the caulk.  Our non-variable check is for external sources such as cams, levers, and springs.

US Pats & Pats Pend.: US.D395,995; US.D425,776; US.D425,399; US.5,829,098; US.5,953,789; US.6,032,331; US.6,397,431; US.6,640,387 .  Door Butler®,  The Red Thing™,  The Jimmy Clip™,  Charlie™,  Door Genie™, MagChek™, Premier™, Ultra™, Century™,  Touch-O-Feather™, The Bead Goes On™, and the reddish colored hold-open tab are trademarks of R.A. Products Co. Inc.  Copyright © 1996-2004 RAPCO™ & Ricardo Alonso.