Metal-Fab Type B-Vent 30" Storm Collar 35in Why is the BTU according

Why is the BTU according to EPA test data smaller than the one advertised

3/4 inch thick handles

Finish Natural Stone Firebox Log Set Volts 120 Wattage 1500 Amps 12

Durable wrought iron construction with an elegant natural finish

Metal-Fab Type B-Vent 30" Storm Collar 35in Why is the BTU accordingType B Gas Vent products are tested and listed to UL 441 for approved gas appliances and feature our innovative twist lock connection and locking tab, eliminating the need for sheet metal screws. Metal Fab Type B Gas Vent combines hemmed flues and casings that maximize product durability and reliability and minimize installation time. Designed for versatility, Metal Fab Type B Gas Vent products 3" 6" adapt to major competing brands and when installed