Pemko 411APKL36 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 or threshold. when the plunger contacts the jamb, the drop bar seal actuates from the hinge side first allowing multiple compression points.
Make & Model
Pemko 36 in Automatic Door Bottom w/ PemkoPrene™ Insert (Mill Aluminum)