Pemko Aluminum Automatic Door Bottom, Mill Finish, PemkoPrene, 9/16"W x 42"L x 1-3/8"H When the plunger contacts the jamb, the drop bar seal actuates from the hinge side- preventing drag. The plunger requires low FeatherTouchun closing force to actuate the drop bar seal. End plates provided are compatible for 1-3/8" and 1-3/4" Can be cut down in the field, up to 2" from the factory provided length. Pemkoprene seal is high quality and can withstand exterior weather conditions.