Marquis Series Home / Our Specialties / Fireplaces / Gas - Traditional / Marquis Series Marquis II 36 Viewing Area 35-7/8”W x 31-11/16”H BTU 44,000 - 22,000 Heating Capacity Fuel Type Gas Marquis II 42 Viewing Area 41-7/8”W x 39-1/16”H BTU 54,500 - 27,000 Heating Capacity Fuel Type Gas Marquis II 36 See-Thru Viewing Area 39-7/16”W x 35-1/8”H BTU 57,500 - 28,000 Heating Capacity Fuel Type Gas Options Heat Management: Outdoor Window Kit Available Heat Management Heat Out Heat Zone