Perko Vented Gas Fill for 1.5 Hose - Straight Neck The Perko 0541 series of vented fills are built to be durable and long lasting. This fill is marked for gas and features a 2-716 straight neck. Perkos 0541 series fills are constructed with a black polymer body and chrome-plated bronze cap. Features Straight neck Chrome plated bronze cap Black polymer body Stainless steel bead chain Marked for gas CE Certified Specifications For Hose Size 1-12 For Vent Hose 58 O.D. Flange 3-38 Mounting Hole Diam