Selkirk RV 6" x 1-9/16" x 9-5/8" Storm Collar is an essential part of a Type B gas venting system designed to provide a secure, weatherproof seal around the gas vent pipe above the roofline. This seal plays a vital role in preventing water, moisture, and other weather elements from entering the pipe system, thereby maintaining its proper function and protecting it from potential damage. For optimal installation, it is important to apply a watertight seal on the inner edge using high-temperature silicone sealant. This ensures the gas vent system remains durable and reliable even under harsh outdoor conditions. By effectively shielding the vent pipe, this storm collar enhances the overall safety and performance of the gas venting system. Model Number: 106810