1/4" - 5/8" Insulated Copper Coil Line Set - 1/2" Black Insulation Taped Together - 35' Long Color_Aluminum Looks like it was just

Looks like it was just waxed

but you will appreciate the benefits over the period of time

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

Some of the best features aren't readily apparent

+ Product Details Size - 8"w X 14"h is the size for the duct opening measurement only

1/4" - 5/8" Insulated Copper Coil Line Set - 1/2" Black Insulation Taped Together - 35' Long Color_Aluminum Looks like it was just+ 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