Block-IRKeep the heat where it belongs with Block-IR infrared heat shielding. The technology behind this energy-saving sheeting originated at NASA, and now non-astronauts can use it to keep their indoor gardens from wasting ambient heat. Consists of two layers of infrared-blocking material bonded with polyurethane, which surrounds a core of nonconductive insulation. When sealed with foil tape, it creates a barrier that locks heat in. |
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