Selkirk RV 5" x 1-9/16" x 8-5/8" Storm Collar is an essential component designed for Type B gas venting systems. It provides a reliable weatherproof seal around the gas vent pipe above the roofline, protecting the system from water, moisture, and other weather-related elements. This protection helps maintain the vent pipe's proper function and prevents potential damage caused by exposure to the elements. For optimal performance, it is important to apply a watertight seal on the inner edge of the storm collar using high-temperature silicone sealant. This ensures the gas vent system remains durable and weather-resistant, even under harsh outdoor conditions. The Selkirk storm collar plays a vital role in enhancing the safety and efficiency of your gas venting setup. Model Number: 105810