DANCO | sku: 100585822 Danco Plastic Mobile/Rv Home Plumbing Vent Cap The DANCO Plumbing Vent Cap is designed to fit mobile home & RV pipes up to a 1-1/2 inch diameter. It features a durable plastic construction that is made to resist rust and corrosion. This cap offers a weather-resistant seal.Durable plastic construction... Log in for pricing