The fact that there are over 75 truck models with over 25 different window sizes and configurations, posed a significant challenge to EnviroDock founders.  After three years, they developed a system involving one primary component and five attachments.  Each attachment  fits several types of windows by adjusting the interlocking pieces.  By attaching the insert that applies to his truck model, the driver can position the Window Air Delivery Unit in the window and seal off the opening completely. The WADU has two 6" duct for supply and return air--separated to provide maximum in cab circulation; two convenience plugs (110V 15amp) for the driver; and three switches to adjust temperature, fan speed and to switch between heat and a/c.  EnviroDock's WADU was designed for truck drivers by truck drivers.

The WADU has a durable and easy to use control panel that driver's can adjust for their individual comfort