EXCEL chimney is specifically engineered for wood burning stoves, fireplaces and residential furnaces and it is suitable for use on appliances that burn:

- Wood - Oil - Coal - Gas - Charcoal

Allowable Flue Gas Temperatures
Max Continuous 650°C (1200°F) 
Brief Forced Firing 925°C (1700°F)
Tested To 1150°C (2100°F)

Both models of storm collar fit 6, 7 and 8 inch EXCEL chimneys.  To form an attic insulation shield assembly in an insulated space, use a storm collar in combination with a support box or radiation shield.  The 6ESQSC is required to form an attic insulation shield on a Square Support (ESS), all other supports and radiation shields can use either collar.  If installing 5" EXCEL, use the storm collar for EXCEL Direct (SC).