Most manufacturers start with a well insulated design, but then make the mistake of using metal screws or bolts for their pressure plates or caps. Each of these fasteners conduct heat and cold right through the so-called thermally broken frame. Sierra’s exclusive nylon clip assembly system is proven thermally broken. These clips enable the Sierra sun room to go together faster and with even pressure between the frame, gasket, and glass. The thermal break is preserved, and your energy bill will reflect it. For the do-it-yourselfer, the Sierra sunroom line is available as a kit, ready for assembly on your prepared site. Standard Geneva greenhouses are also available as a kit.