The Outdoor Plus Avalon Tall 36" x 36" Corten Steel Natural Gas Fire Pit with 12V Electronic Ignition volcanic rock making it ideal for factory built humidification tray making it ideal for factory built fireplaces Manufacturiers* Brand Type Diameter American Metal HSS AC triple Wall 8" (20 cm) American Metal HS AC triple Wall 8" (20 cm) ICC Excel 2100 1" Solid Pack 8" (20 cm) M&G DuraVent DuraTech 1" Solid Pack 8" (20 cm) M&G DuraVent DuraTech Canada (DTC) 1" Solid Pack 8" (20 cm) M&G DuraVent DuraPlus HTC 2" Solid Pack 8" (20 cm) M&G DuraVent DuraPlus AC triple Wall 8" (20 cm) Metal Fab Temp Guard 1" Solid Pack 8" (20 cm) Olympia Chimney Ventis 1" Solid Pack 8" (20 cm) SBI Venting Division Nexvent 1" Solid Pack 8" (20 cm) Security Chimney ASHT+ 1" Solid Pack 8" (20 cm) Security Chimney S 2100 + 2" Solid Pack 8" (20 cm) Selkirk Ultra Temp (UT) 1" Solid Pack 8" (20 cm) Selkirk Super Pro (SPR) 1" Solid Pack 8" (20 cm) Selkirk Super Vent (JSC) 1" Solid Pack 8" (20 cm) Selkirk Hart & Cooley (TLC) 1" Solid Pack 8" (20 cm) Selkirk Sure Temp (ST) 1" Solid Pack 8" (20 cm) Selkirk UltimateOne 1" Solid Pack 8" (20 cm) Selkirk CF Sentinel (CF) 2" Solid Pack 8" (20 cm) Selkirk Super Pro 2100 (ALT) 2" Solid Pack 8" (20 cm) Selkirk Super Vent 2100 (JM) 2" Solid Pack 8" (20 cm) *Specific components may be required depending on the chimney manufacturer residential and commercial projects The Outdoor Plus prides itself on being able to cut