Medco M4 cylinders are UL Standard 437 listed for physical strength and high security, with solid brass machined construction and strategically placed hardened-steel inserts to thwart drilling attacks. In addition to tumbler pins that lift and rotate, the M4 design includes four side pins: three finger pins and one lift pin, which must all interact with the sidebar to open, providing a high level of pick resistance.
HEMCO: HEPA and Carbon Filtration Packs
Genlyte Solutions: Gardco OptiForm Flood
Russelectric: RTSCD-SE
Tarkett: Color + Light
AAF International: MEGAcel I High Flow