364AA Heavy-Duty Full Mortise Automatic Door Bottom Push-Pull Hardware The 217 Series U-Shaped Door

The 217 Series U-Shaped Door Shoe is designed to protect and seal the bottom of 1

ADA compliant thumb turn

at least two hinges on a door must be spring hinges to provide adequate closing force

UL 10C positive pressure

Lever Always Active (Passage)

364AA Heavy-Duty Full Mortise Automatic Door Bottom Push-Pull Hardware The 217 Series U-Shaped DoorThe patented automatic door bottom technology from Zero ensures an efficient seal against the floor or saddle. As the door is closed, the adjustable plunger is compressed against the door frame, activating a concealed flat spring mechanism. Zero door bottoms are designed to block penetration by air, sound, smoke, and flames. AA = Anodized aluminum Supplied with solid neoprene extrusion Fire rated UL10C ANSI BHMA: R3B3241 Consult your local AHJ for