3/8" - 5/8" Insulated Copper Coil Line Set - 1/2" Black Insulation Taped Together - 35' Long Copper Coil-Insulated Line Set It has an outer surface

It has an outer surface made of high-quality aluminum foil and an inner surface made of metalized PET with inside high-tensile spring steel wire

+ Product Details Size – 4"w X 12"h is the size for the duct opening measurement only

and matte black

+ Product Details Size – 8"w X 6"h is the size for the duct opening measurement only

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3/8" - 5/8" Insulated Copper Coil Line Set - 1/2" Black Insulation Taped Together - 35' Long Copper Coil-Insulated Line Set It has an outer surface+ Product Details Operating Temperature From 40F To +248F [ 40C To +120C] High Quality Copper Coil Meets Beats ASTM B280 Standard for Air Conditioning and Refrigeration (Made From C12200 99. 9% Pure Copper). R Value Rating of Insulation R3. 3 * Insulation density is 30kgs CBM = 0. 035 W mK Pre flared ends with nuts are for simple and easy installation. Copper coil line set fits most ductless mini split air conditioners, heat pump systems, and