DuraVent FasNSeal Flex 10" x 175' Stainless Steel Custom Flex Length o24 Can I use the heater

Can I use the heater with Natural Gas or just LPG

29" Cut out) Burn Type/Fuel Type AWS Fully Electronic Ignition - Liquid Propane Base Diameter 40" Top Diameter 44" Height 18" without top

Propane 20 lb

Minimum hearth dimensions - 40" W (front) x 21 7/8" H x 15 3/4" D x 33 3/8" W (rear)

DuraVent FasNSeal Flex 10" x 175' Stainless Steel Custom Flex Length o24 Can I use the heaterMade from super ferritic stainless steel. Corrosion resistant. Manufactured with a sure seal locking seam for superior strength and flexibility. The smooth inner wall provides for no output reduction, allowing for full appliance efficiency, ease of cleaning and regular maintenance. The smooth inner wall optimizes gas flow, minimizes back pressure, and facilitates condensate management. Only flexible chimney liner listed to UL 1738 standard. What's