Perko's 0543DPGBLK Vented Fuel Fill is for use with a 1-1/2" hose on gas applications only. This Vented Fuel Fill features a straight neck and a black, polymer strap. It is an integral tank vent with a flame arrestor and anti-surge valve. Ground wire is not required for this fuel fill. It is constructed with black, polymer material for long-lasting use. The outer dimension of the Flange is 3-5/8" and the neck length is 2-7/16". The mounting hole diameter is 2-1/8" and a #8 screw size is required for installation. Use with 1-1/2" hose size and 5/8" vent hoses.