Size: 0.6 X10/15/20/25/50m, 1.2X10/15/20/25/30/40/50m. Thermal Resistance: 0.79m2K/w (20mm clear cavity to foil faces). Material: Double sided aluminum foil film. 1X Aluminum Foil Film. Saves energy by reducing the stress on heating and cooling systems which can reduce utility bills substantially.
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