367AA Heavy-Duty Surface Mounted Automatic Door Bottom

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The 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 t he door frame, activating a concealed flat spring mechanism. This mechanism drops the seal smoothly from the housing in a scissor-like motion. Zero door bottoms are designed to block penetration by air, sound, smoke, and flames. AA = Anodized aluminum Double neoprene seals Fire-rated UL10C Sound rated for acoustic door systems Show more