Never used before Retrotech Blower Doors and Duct Testers (many times known as Duct Blaster®)! $3200 for the pair (Shipping included in SC, GA, NC), which typically retails for $4600 + shipping. I have used both Minneapolis and Retrotech, this equipment is simpler more intuitive for building performance contractors coming into the market.
Willing to discuss selling individually as well. Only 2 sets for sale!
Please message me if you are interested.