Retrotec 5210 - Dual Blower Door System

Most flow per $ Introducing the ultimate solution for maximum airflow at an unbeatable price! Retrotec's cutting-edge system offers you the most flow for your budget. And with the addition of another single hole cloth panel, you can easily create not one but two separate US 5100 systems, doubling your ventilation capacity in an instant! But that's not all - our large frame is equipped with 3 crossbars, providing secure support for two fans in a single doorway. Say goodbye to stuffy and stagnant air, and experience the refreshing breeze of our innovative system. Upgrade your ventilation game today! It also includes the newly released, industry changing DM32x gauge. Who uses it? Energy Auditors, HVAC Contractors, Building Contractors & Remodelers, Home Inspectors Why Buy This Model? Test larger or leakier buildings. Capable of measuring air leakage in both small to medium sized commercial or multi-family buildings The included Large Aluminum Frame Cloth Door Panel accommodates tho