Perko Vented Fill f/1-1/2" Hose - Straight Neck - Gas - Black. 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. Specifications for Perko 0543 Vented Fill f/1-1/2" Hose: Manufacturer: Perko Color: Black Features of Perko 0543 Vented Fill f/1-1/2" Hose Black plastic cap with black plastic body Black polymer strap Integral tank vent with flame arrestor and anti-surge valve For Hose Size: 1-1/2" For Vent Hose: 5/8" Package Contents: Perko 0543 Vented Fill f/1-1/2" Hose Perko 0543DPGBLK: 0543 Vented Fill f/1-1/2" Hose - Straight Neck - Gas - Black