The RSF Focus 3600 is a high-efficiency, EPA-certified zero-clearance woodburning fireplace designed to combine the performance of a wood stove with the clean built-in appearance of a modern fireplace. Its compact footprint, large viewing area, and strong heat output make it ideal for both retrofit and new construction installations.

• EPA-certified high-efficiency wood fireplace for cleaner burns and reduced emissions
• Large viewing glass area provides an open, contemporary fireplace appearance
• Compact zero-clearance design allows installation in tighter spaces and framed construction
• 2.04–2.1 cu. ft. firebox capacity delivers wood stove-level performance in a built-in format
• Heating capacity up to approximately 1,500 sq. ft. depending on home layout and climate
• Up to 50,000 BTU output for substantial supplemental heating performance
• Low emissions rating (~1.4–1.7 g/hr) for cleaner operation and improved efficiency
• Non-catalytic combustion system reduces creosote buildup while simplifying operation
• Accepts logs up to 18 inches for practical everyday wood loading
• Compatible with optional blower and heat distribution kits for improved circulation
• Certified for use with 6-inch ICC EXCEL chimney system only

Specifications

• Brand: RSF
• Model: Focus 3600 / Focus 3600B
• Fuel Type: Woodburning
• Installation Type: Zero-clearance built-in fireplace
• Firebox Capacity: approx. 2.1 cu. ft.
• Heating Capacity: up to 1,500 sq. ft.
• Maximum BTU Output: up to 50,000 BTU
• Efficiency: up to 76–79%
• EPA Emissions Rating: approx. 1.4–1.7 g/hr
• Maximum Log Length: 18 in.
• Chimney Requirement: 6 in. ICC EXCEL chimney system only

A premium woodburning fireplace designed to deliver high-efficiency heating, contemporary styling, and powerful performance in a versatile zero-clearance installation format.

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