The DM-2A Manometer was updated in 2011 with the most recent software through Retrotec's exchange program where you send your manometer to them and in return you get a refurbished unit that has been recalibrated and had the latestsoftware installed. This was done in July, 2011.This Blower Door is 2 years old and is in very good condition. This is an extra set that has been used on about 20 home energyaudits. We are selling it because we don't use it enough.The case for the Blower Door frame is…See More
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Everblue's Blower Door tutorial will teach you everything from understanding equipment to detailed set up a blower door frame. For BPI certification and more visit us at www.everblue.edu or call us at 1(800)-460-2575.