The Model 420 door is designed for heavy-duty use in a variety of commercial and industrial applications
Electric operator or chain hoist
Bottom sensing edge
Full sash section with 1/8″ (3 mm) DSB, insulated; 1/8″ (3 mm) and 1/4″ (6 mm) acrylic
Individual lites with 1/8″ (3 mm) DSB; 1/8″ (3 mm) and 1/4″ (6 mm) acrylic; 1/8″ (3 mm) and 1/4″ (6 mm) polycarbonate; 1/8″ (3 mm) and 1/4″ (6 mm) tempered; 1/4″ (6 mm) wired
3″ (76 mm) track
Bracket mounting (not available on full vertical door tracks)
Higher-cycle springs in 25k, 50k, 75k, 100k cycles
Exhaust ports
Jamb weather seals
Bottom strips; including: looped PVC weatherstrips, flexible PVC astragal weatherstrips, and double-contact weatherstrips
Reinforcing struts of roll-formed, galvanized steel
Movable center posts for 2″ (51 mm) or 3″ (76 mm) tracks that roll away, with automatic safety catches that prevent door closure when posts are removed
Tumbler keyed lock
