Retrotec Blower Door equipment is the complete package to perform air tightness testing on any residential property. Systems come fully calibrated and allow auto or manual operation and come complete with a blower door fan, the DM32X gauge with enhanced features and technology, connectors, ranges, and software. The quick connect aluminium frame comes with an extra crossbar for stability and gauge mounting and the wind dampening SmartCloth is included. Retrotec supply a full range of accessories and spare parts.