Pemko STC411APK Full Mortise Acoustic Automatic Door Bottom

Pemko STC411APK Full Mortise Acoustic Automatic Door Bottom

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. 

• 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
• 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. 
• End plate kits are included. Replacement part is K435. For doors narrower than 1-3/4", please specify K411 end plate kit. 
• 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

Ratings:

• Air Infiltration Tested
• Sound Tested - ASTM E90
• BHMA Certified
• Smoke Tested - UL1784
• Fire Rated - UL10C - Positive Pressure
• Underwriters Laboratory 4L10