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Curtains may be held back with tie-backs (a loop of cloth, cord, etc., placed around a curtain to hold it open to one side; typically passed through a ring on a hook attached to the wall, and fastened with a knot, button, or velcro; often adorned with tassels) or may be closed and opened with sticks called draw-pulls (rods made of plastic, wood ...
A typical commercial air curtain enclosure. In North America, the more commonly-used term for an air door is "air curtain". The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) defines an air door as follows: "In its simplest application, an air curtain is a continuous broad stream of air circulated across a doorway of a conditioned space.
High-speed doors are made to handle a high number of openings, generally more than 200,000 a year. They must be built with heavy-duty parts and counterbalance systems for speed enhancement and emergency opening function. The door curtain was originally made of PVC, but was later also developed in aluminium and acrylic glass sections.
Apply strips of double-stick tape on all four sides of the window frame. Cut the plastic sheeting slightly larger than the window pane. Place it on the pane, pressing it against the double-stick ...
Vinyl products are pervasive—including toys, [50] car interiors, shower curtains, and flooring—and initially release chemical gases into the air. Some studies indicate that this outgassing of additives may contribute to health complications, and have resulted in a call for banning the use of DEHP on shower curtains, among other uses.
This allows the curtain to be long enough to seal against the floor and contain draughts, but not drag on the floor or catch under the door when the door is opened. [2] Rising portières come in different configurations to seal the curtain against different door surrounds.
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