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RSF Focus 3600Bi Wood Fireplace Insert

The RSF Focus 3600Bi Wood Fireplace Insert transforms an existing masonry fireplace into an efficient, clean-burning wood heating system. Designed to heat approximately 800–1,500 sq. ft., it delivers up to 50,000 BTU/hr from a 2.04 cu. ft. firebox while providing a generous 241 sq. in. view of the fire.

EPA/CSA certified at 1.7 g/hr, the Focus 3600Bi combines 70% HHV average efficiency with clean, contemporary styling and RSF's proven Canadian fireplace engineering. A detachable flue collar simplifies installation, while an optional heat-activated internal blower increases heated-air circulation throughout the room.

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  • Surround

 

Manuals and Resources

We’ve gathered trusted resources from the manufacturer to help you explore how this product performs, installs, and fits into your home.

The RSF Focus 3600Bi Wood Fireplace Insert is ideal for homeowners who:

  • Have an existing masonry fireplace they want to convert into an efficient wood-heating system.
  • Need approximately 800–1,500 sq. ft. of heating capacity.
  • Want the warmth and independence of real wood heat while reducing the drafts associated with an open masonry fireplace.
  • Value a large 241 sq. in. fire view in a clean, contemporary insert design.
  • Want a non-catalytic, EPA/CSA-certified wood insert with low particulate emissions.
  • Prefer an insert that accepts firewood up to 18" long.
  • Want the option of a heat-activated internal blower for increased room-air circulation.
  • Need optional backing plates to accommodate a larger existing fireplace opening.
  • Value Canadian-made fireplace engineering and established RSF craftsmanship.

RSF Focus 3600Bi Features

  • Heavy-Duty Welded Steel Firebox – Built for decades of dependable service using heavy-gauge steel construction designed to withstand years of high-temperature operation.
  • Detachable Flue Collar with Pull Handle - Designed to simplify connection to the chimney liner during installation.
  • EPA 2020 certified clean-burning technology
  • Low emissions of approximately 1.7 g/hr
  • Large arched viewing glass for an impressive fire view
  • Accepts firewood up to 18" in length
  • Certified for use with 6" ICC EXCEL chimney systems only
  • Up to 75.3% optimal efficiency (LHV)

Specifications

Specifications outline how this appliance fits, performs, and operates in your home, helping ensure safe installation, efficient heating, and lasting comfort.


Available with:

  • 6" Chimney Liner — Designed for use with ICC EXCELiner.
  • Optional Heat-Activated Internal Blower — Increases heated-air circulation throughout the room and plugs into a nearby electrical outlet.
  • 42" × 30⅝" Backing Plate
  • 42" × 30⅝" × 1½" Deep Backing Plate
800 to 1,500 ft2

Heating Area


50,000

Max BTU


19,077

Output BTU


241 sq. in. — 20½"W × 11¾"H

Viewing Area


2.04 cu. ft. 
Firebox Size

Up to 18" 
Maximum Firewood Length. 

70%

HHV EPA average 

75.3% LHV

Optimal Efficiency




1.7 g/hr

EPA/CSA Particulate Emissions


*Consult manual for detailed dimensions & clearances.
*Minimum install depth may vary by chosen surround.
Specifications may vary based on selected options.

Not Sure if this is the Right Unit for You?

Buying the right hearth or sauna isn’t just about the product — it’s about understanding your space, your goals, and doing it right the first time.

How Nordic Can Help

Our Proven Process

2

Refined Choices

Using our expertise, we thoughtfully curate and present the best options tailored specifically to you.

1

Listen & Understand

We take the time to listen, ask the right questions, and fully understand your home, needs, and goals.

3

Verify On-Site

We confirm every detail through a technical site visit, ensuring the solution is correct, safe, and code-compliant.

4

Install With Care

Our experienced installers complete the work with precision, respect, and care for your home.

5

Service & Support

We provide ongoing service and support to keep your appliance running safely, efficiently and reliably for years to come.

The result? Absolute peace of mind and satisfaction.

📍 Proudly serving Northern Ontario homes    Our Service Area


Where Comfort Begins

Your home deserves care, craftsmanship, and attention to detail.
Warming hearts and homes, one fire at a time.


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