All solid fuel appliances should be placed on a non combustible surface to protect the floor from hot embers that could fall from the appliance during loading. This floor protection meets the requirements of CSA B365 (Canada) and NFPA 211 (US) and subject to industrial design protection. Here's a simple, effective and complete solution for freestanding wood or pellet heaters having overall dimensions that do not exceed 30 3/4" (76 cm) wide and 28" (71 cm) deep. Each panel, of identical size, is insulated with (1/2" (13 mm)) Micore® 300 which offers an R factor of 1.03. The R value of the floor protection must be equal to or greater than that required by the manufacturer. 54" (137 cm) D x 46 3/4" (117 cm) W 68 lb (31 kg)