ventilating door

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• weather door — Trapdoor Trap door , n. 1. (Arch.) A lifting or sliding door covering an opening in a roof or floor. [1913 Webster] 2. (Mining) A door in a level for regulating the ventilating current; called also {weather door}. Raymond. [1913 Webster]… …   The Collaborative International Dictionary of English

• building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

• Duct leakage testing — A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating, ventilating and air conditioning (HVAC) ductwork. A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a… …   Wikipedia

• Nash Motors — Also see: Kelvinator and American Motors Corporation Nash Motors Industry Automobile Fate Merged Successor Nash Kelvinator Corporation …   Wikipedia

• Charles Sylvester — Bust in Derby Museum by Francis Chantrey Born 1774 Died 1828 Occupation …   Wikipedia

• louver — louvered, adj. /looh veuhr/, n. 1. any of a series of narrow openings framed at their longer edges with slanting, overlapping fins or slats, adjustable for admitting light and air while shutting out rain. 2. a fin or slat framing such an opening …   Universalium

• Cteniza Californica — Trapdoor Trap door , n. 1. (Arch.) A lifting or sliding door covering an opening in a roof or floor. [1913 Webster] 2. (Mining) A door in a level for regulating the ventilating current; called also {weather door}. Raymond. [1913 Webster]… …   The Collaborative International Dictionary of English

• Trapdoor — Trap door , n. 1. (Arch.) A lifting or sliding door covering an opening in a roof or floor. [1913 Webster] 2. (Mining) A door in a level for regulating the ventilating current; called also {weather door}. Raymond. [1913 Webster] {Trapdoor spider} …   The Collaborative International Dictionary of English

• Trapdoor spider — Trapdoor Trap door , n. 1. (Arch.) A lifting or sliding door covering an opening in a roof or floor. [1913 Webster] 2. (Mining) A door in a level for regulating the ventilating current; called also {weather door}. Raymond. [1913 Webster]… …   The Collaborative International Dictionary of English

• Galashiels — infobox UK place country = Scotland official name= Galashiels gaelic name=An Geal Àth scots name= Gala, Galashiels population = 12,367 os grid reference= NT495365 map type=Scotland latitude=55.61945 longitude= 2.80339 unitary scotland= Scottish… …   Wikipedia

• Maserati Coupé — / Spyder Manufacturer Maserati Also called Maserati 4200 GT Production 2001–2007 …   Wikipedia