Retrotec EU5100X-E is the most popular blower door system for testing houses and small commercial.
PROMO Package: EU5100X-E, FanTestic Pro software (Free), set of 29/47/74 adapters included (Free)
Retrotec EU5110X-E is the most popular blower door system for testing houses and small commercial.
PROMO Package: EU5100X-E, FanTestic Pro software (Free), set of 29/47/74 adapters included (Free)