1 Inch Copper Pipe - Type L. The tubing measures 1 Inch nominal size with an outside diameter of a 1-1/8 inches. It is shipped in 5 foot lengths maximum which makes it great for smaller applications that require a shorter distance of tubing. It is important to note that this tubing will use 1 inch fittings such as, Copper (soldering required in most cases), Flare, Crimped/Pressed (power crimper necessary) or Compression connection fittings. Type L copper tubing is great for water supply lines in both commercial and residential properties. Copper tubing applications may include a refrigerant line in your Heating, Cooling and Air Conditioning (HVAC) System or as supply lines for hot and cold tap water. NOTE: Due to shipping regulations five foot sections is the maximum length shipped in straight pipe. If Longer lengths are required coiled pipe is another available option . 1" Type L Copper Pipe shipped in 5 foot lengths maximum.