Superior 4" Outside Air Kit for BRT40ST See-Through Gas Fireplace btu56175 Beyond just safe

Beyond just safe

The firebox features secondary reburn tubes producing a High Efficiency burn

UL 641 Flue Material 430 stainless Steel Casing Material Galvanized Steel Inner Diameter 4" Height/Length 60" Color Silver Technical Drawings & Dimensions

This set will bring the beauty of nature to life within your fireplace

Mason-Lite 14" Inner Liner (Individual) MCL-814

Superior 4" Outside Air Kit for BRT40ST See-Through Gas Fireplace btu56175 Beyond just safeWhat's Included Outside Air Kit Features For use if outside combustion air is required or desired. Must be used in conjunction with locally purchased, non combustible Class 1 or Class 0 flexible duct. For use with Superior BRT40ST B Vent See Through Gas Fireplace Specifications Model Number FOAK 4LD Catalog Number 81L88 Diameter Size 4" Compatible Fireplace BRT40ST