RSF$$
RSF Focus 3600i Fireplace
Wood Insert
Configure, Price & Visualize
Verified Estimate confirms the unit should fit and work in your space, then prices the exact vent kit for your venting plus any install add-ons you’ll actually need. The most accurate number.
Quick Estimate uses the simplest vent kit and a baseline install—a fast starting number, no questions.
Visualizer shows this unit rendered in a photo of your own room before anything is decided.
Product Configuration
Unit, fitting vent kit, and installation—priced right on this page.
This one prices person-to-person—book the free in-home visit and our team measures, confirms every install detail, and writes your estimate on the spot.
Sold and installed from our Ballard showroom · SKU FGF3600IN
Turn the open fireplace you already have into a real wood heater.
Quick Facts
- Heating Capacity: 800–1,500 sq ft
- Efficiency: 70% (weighted average, higher heating value).
- Maximum Log Size: Up to 18"
- Firebox Size: 2.04 cu ft
- Fuel: Wood.
- Fan: Optional
Who It's For
An open masonry fireplace looks warm, but most of its heat goes straight up the chimney, and the room cools off the minute the fire dies down. You need the fireplace you already have to start heating the house. The RSF Focus 3600i is for the family that loves a wood fire and wants it to do real work, without building a new fireplace to get there. Keep the open fire and you keep feeding a chimney; slide this insert in and the same wood heats 800 to 1,500 square feet.
What Makes It Special
It is RSF's first fireplace insert, built around a 2.04 cubic foot firebox—enough room for logs up to 18 inches behind an air-tight glass door. It closes off the draft of the open masonry fireplace, so the fire stops pulling warm air out of your house.
It also meets the 2020 federal emission standard, so it burns clean as well as hot. Add the optional heat-activated blower and it switches itself on once the insert is warm, pushing that heat out into the room instead of letting it collect around the fireplace.
Possible Downsides
- The blower is an add-on. Without it, the insert heats the room it sits in by radiation alone.
- It needs an existing masonry fireplace. For a wall with no fireplace, look at the Focus 3600 or Pearl 3600.
- It is a wood fire. You carry wood in and ash out.
If your fireplace is pretty but cold, the RSF Focus 3600i is the right decision. The room that used to feel drafty becomes the one everyone gathers in on a winter night.
Options include the heat-activated blower, an oversize or deep backing plate to cover the old opening, and a firescreen.
Quick Specs
Dimensions
28" W · 23.06" H · 18.13" D
- Approx. Heating Area
- 800–1,500 sq ft
- Maximum Log Size
- Up to 18″
- Firebox Size
- 2.04 cu ft
- Style
- All · Modern · Traditional · Transitional
- Fuel
- Wood
Available at our showroom
Manuals & Spec Sheets
RSF: Focus 3600i Owner's Manual
RSF: Focus 3600i Brochure
RSF: Focus 3600i Installation Manual
RSF: Focus 3600i Architect's Guide
Documentation for this model is available at our showroom.
Can you get an instant online estimate for the RSF Focus 3600i Fireplace?
Yes—right on this page. Configure the RSF Focus 3600i Fireplace and get a free, no-obligation instant estimate covering the unit as configured, a fitting vent kit, and professional installation labor. No phone call required.
What's included in the online estimate?
The unit with the options you selected, a real vent kit matched to your venting, and the installation labor for a typical setup. Your free one-to-two-hour in-home visit confirms every detail before anything is ordered.
Who pulls the permit?
We do, on every job, in every jurisdiction we serve—and we meet the inspector. It's built into the process, not an upsell.
Can you see the RSF Focus 3600i Fireplace in a photo of your own room?
Yes. The Visualizer tab on this page renders the RSF Focus 3600i Fireplace into a straight-on photo of your wall, scaled to the room, so you see it in your space before you price a thing. Phone photos are fine. It's a faithful preview, not an architectural drawing; sizing, venting, and trim get confirmed at the free in-home visit.
Is the online estimate real, or a rough guess?
Real, and honest about what it is: a price for the RSF Focus 3600i Fireplace as configured, a fitting vent kit, and professional installation labor, built from real Seattle installs. It is not binding. The free one-to-two-hour in-home visit checks your actual house before the price is final, and nothing is ordered until then.
Do you install and service the RSF Focus 3600i Fireplace yourselves?
Yes, both. Our own in-house installers set the RSF Focus 3600i Fireplace, run the venting and the gas, pull the permit, and light the first fire before leaving. Afterward the service desk looks after every unit that came from Sutter, with factory-trained technicians and a real date when you call.
Shop the Series, Not the Model
Close Cousins on the Floor
A near-miss on size or budget usually has a cousin that fits—ask the team.
Browse All Wood InsertsThe Whole Point
Getting a Fireplace Installed Shouldn't Be a Hassle
Be confident that the details of your project are covered—the permit, the venting, the schedule, the trim that honors your hundred-year-old tile. Then enjoy your home every day of the year.