Our Stainless-Steel Clamshell Ventilators are attractive and easy to install. Built with 304 stainless steel, our Clamshell Vents are durable and sleek. The small A” shape works well for covering cable pass-through holes. Use the larger B” shape to shield compartment vent holes and blower exhaust openings. These inexpensive vents add a touch a style while shielding cable or covering vents from water. Specifications Type: Clamshell Material: 304 Stainless Steel Warranty: One year