Tundra seal. Closed cell polyolefin tubing with excellent thermal insulating capabilities. Fire retardant. Will not rot or disintegrate. Eliminates freeze during the winter and reduces condensation in the summer. Use over cold and hot water systems, refrigeration and air conditioning lines, and a broad range of other insulating applications. No. PR38058UA: Wall Thickness: 3/8 In., Material: Polyolefin, Pipe Size: 1/2 In. Copper, 3/8 In. Iron, Length: 3 Ft., Temperature Range: -90 F to 210 F, R Value: 2.4, Color: Gray, Pkg Qty: 4, Package Type: Bag No. PR38078UA: Wall Thickness: 3/8 In., Material: Polyolefin, Pipe Size: 3/4 In. Copper, 1/2 In. Iron, Length: 3 Ft., Temperature Range: -90 F to 210 F, R Value: 2.2, Color: Gray, Pkg Qty: 4, Package Type: Bag No. PR38118UA: Wall Thickness: 3/8 In., Material: Polyolefin, Pipe Size: 1 In. Copper, 3/4 In. Iron, Length: 3 Ft., Temperature Range: -90 F to 210 F, R Value: 2.2, Color: Gray, Pkg Qty: 4, Package Type: Bag No. PR38138UA: Wall Thickness: 3/8 In., Material: Polyolefin, Pipe Size: 1-1/4 In. Copper, 1 In. Iron, Length: 3 Ft., Temperature Range: -90 F to 210 F, R Value: 2.6, Color: Gray, Pkg Qty: 4, Package Type: Bag No. PR38058UW: Wall Thickness: 3/8 In., Material: Polyolefin, Pipe Size: 1/2 In. Copper, 3/8 In. Iron, Length: 6 Ft., Temperature Range: -90 F to 210 F, R Value: 2.4, Color: Gray, Pkg Qty: 1 No. PR38078UW: Wall Thickness: 3/8 In., Material: Polyolefin, Pipe Size: 3/4 In. Copper, 1/2 In. Iron, Length: 6 Ft., Temperature Range: -90 F to 210 F, R Value: 2.2, Color: Gray, Pkg Qty: 1 No. PR38118UW: Wall Thickness: 3/8 In., Material: Polyolefin, Pipe Size: 1 In. Copper, 3/4 In. Iron, Length: 6 Ft., Temperature Range: -90 F to 210 F, R Value: 2.2, Color: Gray, Pkg Qty: 1 No. PR38138UW: Wall Thickness: 3/8 In., Material: Polyolefin, Pipe Size: 1-1/4 In. Copper, 1 In. Iron, Length: 6 Ft., Temperature Range: -90 F to 210 F, R Value: 2.6, Color: Gray, Pkg Qty: 1