CALIFORNIA GREENHOUSE HOME PAGE We provide Complete High Quality Kits for building both Cold Frames, High Tunnels and Commercial Greenhouses. These Kits are complete and include the Precision Bent Frames,State-of-the-Art Hardware & We provide Complete High Quality Kits for building both Cold Frames, High Tunnels and Commercial Greenhouses. These Kits are complete and include the Precision Bent Frames,State-of-the-Art Hardware & Software and a selection Greenhouse Coverings.