The Model 6047 Wood Frame is 60 inches wide by 47 inches tall. The 4 inch entry and exit hole in the back side of the left hand and right module assemblies.

Custom designed controller for a solar air heater. This is not a product that is purchased from your favorite home improvement center and resold on ebay.

This kit is complete with (2 ea.) custom 8" x 8" wall vents with washable filters, metal wall duct mounting assembly. 4 inches O.D.

Digital thermometer fan switch. Fan not included.

Left side and right side thru the wall Model 1536. Sold in pairs. Order in between modules in pairs 2,4,6,8...etc.

The Model 6036 is 60 inches wide by 36 inches tall. The 4 inch entry and exit hole in the back side of the left hand and right module assemblies.

U.S Patent 7,434,577 Canadian Patent 2,643,573 A solar window heater works by circulating air from inside a room through the system mounted on the interior window sill.

The Model 1500 "High Heat" Series Solar Air Heater is a Module Array Assembly for Commercial and Residential application. High Heat output with Patented "Step-Wise Heating Technology".