The acoustic automatic door bottom provides excellent performance for acoustic openings
Independent testing has shown that the STC Series Automatic Door Bottom has “sealed-in-place” type performance
Meets ANSI Standard S12.60-2002, Acoustical Performance Criteria, Design Requirements, and Guidelines for Schools
Helps school projects earn LEED IEQ School Specific Credits for Enhanced Acoustical Performance
Smoother action positive seal mechanism. All Pemko automatic door bottoms consist of an aluminum case which surrounds a movable drop-bar seal. The drop-bar seal is actuated by a plunger which contacts the jamb as the door is closing, forcing the drop-bar seal down against the ﬂoor / threshold.
Installation is fast and easy because disassembly is not required to change handing: simply ﬂip the automatic door bottom and you’ve reversed the hand.
The drop-bar seal actuation mechanism (all models) causes the drop-bar seal to always actuate on the hinge side ﬁrst. This feature prevents the seal from skidding along the ﬂoor / threshold while the door is being closed. Door hang up will not occur.
Pemko automatic door bottoms are provided NET length
STC4131CPK: C – Clear Anodized Aluminum with Black PemkoPrene insert
STC4131BSPPK: BSP – Black Suede Powder Coat with Black PemkoPrene insert
STC4131DPK: D – Dark Bronze Anodized Aluminum with Black PemkoPrene insert