4301_NBL Surface Applied or Semi-Mortise Automatic Door Bottom with Dual Nylon Brush Inserts Cal-Royal Calypso Series Lever Locks Adjustable jamb weatherstrip is shown

Adjustable jamb weatherstrip is shown mounted on openings with 1/16" gaps

The horn is rated at 110 decibels

Formerly known as AUR-NTM627-NR (Generation 2)

and insects from around the opening

4301_NBL Surface Applied or Semi-Mortise Automatic Door Bottom with Dual Nylon Brush Inserts Cal-Royal Calypso Series Lever Locks Adjustable jamb weatherstrip is shownPemko 4301_NBL Surface Applied or Semi Mortise Automatic Door Bottom with Dual Nylon Brush Inserts The 4301 Series Non Handed, Semi Mortise and Full Surface Automatic Door Bottom is a heavy duty solution for preventing air, light, sound, fire, smoke, dust, and moisture from entering the gap under doors. It features a drop down seal that is lowered when the door is closed. It can be surface mounted or semi mortised applied to the face of the door. BHMA