Majestic DuraTech 6" Unpainted Flat Ceiling Support Box cover It accepts a 4" oval

It accepts a 4" oval flue collar and converts it to a 4" round flue vent

Tahoe 450L – Outdoor Ventless Gas Linear Fireplace

Available unpainted or with a Matte Black finish

Napoleon (A4758AK) Vent Reducer Kit for BHD4 Only - Reduces 5/8 to 4/7

45° Elbow and Terminal

Majestic DuraTech 6" Unpainted Flat Ceiling Support Box cover It accepts a 4" ovalWith a Refractory insulation encased between dual walls, DuraTech offers the optimum in safety and performance. It keeps the outer wall of the chimney cool while ensuring high flue gas temperatures for optimum draft performance. What's Included Unpainted Flat Ceiling Support Box Features 6" DuraTech component Supports chimney pipe and provides a positive connection between support box and chimney with a built in twist lock. Designed for use in