Home Heat Distribution Kit for Majestic Fireplaces HEAT-OUT-GAS 6" Chimney Stabilizer ***Can be drilled into but

***Can be drilled into but you have a risk of splitting/*Use a 1A Diamond Bit

When installing the FBK-LIN-B thermostatically controlled blower

They are not universal

F4123 VRE3242ZENWH 42" OD Fireplace

Home Heat Distribution Kit for Majestic Fireplaces HEAT-OUT-GAS 6" Chimney Stabilizer ***Can be drilled into butThe HEAT OUT GAS heat management system is designed to remove unwanted heat from your home. The HEAT OUT GAS operates on 120VAC, 60 Hz electrical services. The HEAT OUT GAS kit uses flexible duct marked as meeting the requirements of UL 181 Class I ducting.*Must be installed by a qualified service technician only.