Description
Z Flex 6" x 40' Aluminum Liner Kit marble black Hargrove F3520TN Canyon Timber Individual 58DVA CF 49in Style:With Digital Timer On off switch w Hargrove F3520TN Canyon Timber Individual Logs The National Fuel Gas Code (NFPA54) and local codes require a minimum ventilation flow of 4 CFM per 1000 Btu hr of heater input by either mechanical or gravity ventilation if the heaters themselves are not vented to the outside