The 411 Series Full Mortise Automatic Door Bottom features a drop-down seal that automatically lowers when the door is closed to seal the gap. It is fully mortised and made of durable aluminum mill casing that does not affect the door's appearance.

2024年12月17日 · Automatic Door Bottoms also known as Drop Down Acoustical Bottom Seals, offers improved clearance over standard door bottoms by retracting when the door is open to accommodate carpets, rugs and other floor surfaces. When closed, the door bottom creates a strong, reliable barrier for sound, air infiltration and dust.

We offer a large selection of Sound Control and soundproofing Automatic Door Bottoms including surface mounted, semi mortised and fully mortised automatic door bottoms to seal the gap under the door thereby blocking noise from coming through door.

The Automatic Door Bottom then drops a seal in a scissor-like motion from the hinge side, adjusting to the floor from a pivoting point. As the neoprene seal compresses, it forms a tight, secure seal against the saddle or floor.

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.

An Automatic Door Sweep is a mechanical device attached to the bottom of a door that automatically lowers a seal to auto block gaps when the door is closed, helping to prevent drafts, noise, and pests from entering a space.