Solar device and method for assembly

A solar collector and a method of manufacture is disclosed. The solar collector frame has internally oriented projections for positioning a light transmissive cover, absorber plate, insulation and base to form an enclosure. To provide for maximum active or passive collection efficiency, by increasing resistance to heat flow, an easily maintained evacuated cover is disclosed. The solar collector can be economically manufactured and can be on-site fabricated, and adapted for single or multiple installation in original or retrofit applications in a building with minimal structural modification.