What is a Mortised door bottom?
Product Description. This heavy duty mortised automatic door bottom is designed to provide a tight and strong seal for reliable soundproofing. It is also rated for fire and smoke protection. The door bottom is fitted with a solid neoprene bulb which has a maximum drop of 1 inch. The seal is raised when the door opens.
What is the purpose of an automatic door bottom?
They ensure an efficient seal with an adjustable plunger that is compressed against the frame as the door is closed, activating a concealed flat spring mechanism. This mechanism drops the seal smoothly from the housing in a scissor-like motion.
What are automatic doors called?
These are called sliding door operators. Automatic sliding doors are commonly found in offices and shop entrances. These doors contain a magnetic locking mechanism that automatically unlocks during emergencies.
Should a door sweep touch the floor?
Ideally, the sweep should be installed so that is comes in contact with the bevel on the threshold but where the sweep will not touch the flooring material (i.e. carpet, tile) as the door swings open and closed. …
Should door sweep be inside or outside?
A majority of Door Sweeps should be installed on the inside of the door, since most entry doors are “in-swinging” doors. A door sweep attached to the outside of the door would be only be used for an “out-swinging” door.
How do drop seals work?
A drop-down seal is fitted along the bottom of a fire door and works in unison with a latch on the frame. Once the door closes, a mechanism is activated whereby a seal drops down and covers the gap underneath the door and reduces the risk of smoke passing through.
Do door sweeps work on carpet?
Automatic door sweeps are ideal for floors that cross rugs or carpets. When the door is closed the sweeps will close the gap between the threshold and the door, and when the door is open the automatic door sweeps rise, passing over the rug or carpet. Both of these door bottom sweeps come with screws for installation.