The FyreWrap Elite is often also utilised for a two-layer substance for protecting commercial kitchen grease ducts. Tested for each ASTM E2336, the wrap material is acceptable as an alternative to a traditional fireplace-rated shaft and demands zero clearance to combustibles. See our array of kitchen extract admirers Commercial Kitchen https://dantelbrer.blog4youth.com/37493502/the-2-minute-rule-for-commercial-kitchen-extract-systems