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What does SD stand for?

SD stands for Smoke Damper (HVAC systems)

This definition appears very frequently

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Other Resources:
We have 158 other meanings of SD in our Acronym Attic

Samples in periodicals archive:

Contract notice: Testing and maintenance of fire and smoke dampers in the broadcast center 1 of the zdf in mainz The Contractor shall in the course of a framework agreement in the broadcast center 1 of the ZDF, ZDF-Strasse 1 55127 Mainz-Lerchenberg the testing and repair of fire and smoke dampers.
The Sheet Metal Air Conditioning Contractors National Association (SMACNA) represents over 1,600 heating, ventilating and air conditioning contractors (HVAC); air and water testing and balancing firms; fire and smoke damper and louver manufacturers; and related sheet metal companies.
in accordance with the manufacturer~s instructions and technical specifications PKN-CEN/TS 54-14:2006 l) Checking the suitability of CSP to activate all support functions - such as flap control smoke dampers, fans, escape doors and other devices / if any at /.
In recent years Qad-net has been diversifying into import substitution products in HVAC and have announced the addition of new product lines such as air filters, motorised fire and smoke dampers and louvres which will be manufactured and have been tested in compliance with international technical standards.