Hearth Craft Grande GR38270 Clear Glass Natural Iron Twin Fireplace Door w18.8 Manufacturer* Brand Type Diameter American w53.5 Manufacturer* Brand Type Diameter American Metal HSS AC Triple Wall 6" (15 cm) American Metal HS AC Triple Wall 6" (15 cm) DuraVent DuraTech 1" Solid Pack 6" (15 cm) DuraVent DuraTech Canada (DTC) 1" Solid Pack 6" (15 cm) DuraVent DuraTech Premium 2" Solid Pack 6" (15 cm) DuraVent DuraPlus HTC 2" Solid Pack 6" (15 cm) DuraVent DuraPlus AC Triple Wall 6" (15 cm) Metal Fab Temp Guard 1" Solid Pack 6" (15 cm) Olympia Chimney Champion Chimney System 1" Solid Pack 6" (15 cm) Olympia Chimney Rockford Chimney Systems 1" Solid Pack 6" (15 cm) Olympia Chimney SBI Division Venting Ventis 1" Solid Pack 6" (15 cm) SBI Venting Division Nexvent 1" Solid Pack 6" (15 cm) Security Chimney S 2100 + 2" Solid Pack 6" (15 cm) Selkirk CF Sentinel (CF) 2" Solid Pack 6" (15 cm) Selkirk Super Pro 2100 (ALT) 2" Solid Pack 6" (15 cm) Selkirk Super Vent 2100 (JM) 2" Solid Pack 6" (15 cm) *Specific components may be required depending on the chimney manufacturer This Grand Canyon Small Large Installation Kit with fittings will help your gas fueled appliance become the focal point of your home Hearth Craft by Design Specialties and are available in custom sizes