Reduce heat and air conditioning loss by 90%. Mount easily atop tile with silcone sealant included; 32' stainless steel cable also included drops down the flue and mounts to firebox wall. Spring action for easy opening. Fire safety device locks the damper open in cast of a chimney fire. Available in six sizes. Featured on This Old House home improvement show. 8 x 8 Lock Top Damper Regular price: $207.95 Sale price: 8 x 13 Lock Top Damper Regular price: $210.95 Sale price: 8 x 17 Lock Top Damper Regular price: $269.95 Sale price: 13 x 13 Lock Top Damper Regular price: $215.95 Sale price: 13 x 17 Lock Top Damper Regular price: $266.95 Sale price: 17 x 17 Lock Top Damper Regular price: $329.95 Sale price: 50' Stainless Steel Cable for Lock Top Dampers Regular price: $48.95 Sale price: Copyright © 2008 Chimney Depot Inc. All rights reserved.