Smoke-vent
131Laki — Infobox Mountain Name=Laki Photo=Lakagigar Iceland 2004 07 01.jpg|Laki Caption= Elevation= varies: canyon to 1725 m (5659 ft) Location=Iceland | Prominence = Coordinates = coord|64|03|53|N|18|13|34|W|type:mountain region:CA Topographic… …
132Damper (architecture) — A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room,… …
