Bay Series Home / Our Specialties / Fireplaces / Gas - Linear / Bay Series U30 Bay Viewing Area 30”W x 20”H BTU 22,500 Heating Capacity Fuel Type Gas Features/Notes Also available in screen options and standard units with screen front. U50 Bay Viewing Area 50”W x 20”H BTU 38,000 Heating Capacity Fuel Type Gas Features/Notes Also available in screen options and standard units with screen front. U70 Bay Viewing Area 70”W x 20”H BTU 52,500 Heating Capacity Fuel Type Gas Features/Notes Also available in screen options and standard units with screen front. Liners Painted Steel Fluted Infinity Glass