SharkBite 5' White PEX Stick Pipe for Hot/Cold Water. It is compatible with 3/8" Quick Connect & Brass PEX Insert Fittings. W Type B Burst PEX Pipe Rated 1,100 PSI At 73 Degrees Fahrenheit, 375 PSI At 180 Degrees Fahrenheit. Type B Silane Method PEX Has More Anti-Oxidants & Thermal Stabilizers Which Is Critical For Chlorine Ratings & Recirculation Systems. Type A,B,C Are European System Designations Not Rating/Grading System For PEX. Do Not Use Duct Tape, Pipe Dope, Threading Compound, Mineral/Linseed Oil. Support Pipe Every 30" Vertically & Horizontally. Protect Pipe When Entering/Exiting Slab Or Walls. Do Not Kink Or Expose To Sunlight. Minimum Clearance To Water Heaters, Boilers, Wood Burning Appliances 18", Recessed Lights 12", Gas Appliance Vents 6". It is NSF-61 FDA, CSA/ASTM, UPC Listed/Approved. It has 25 Year Warranty Even When Used With Other Manufacturers ASTM SDR-9 Certified Fittings. It covers materials, labor & is not pro-rated.