What you get
The Duluth Forge FNF300T Gas Fireplace Insert is a gas insert that its maker rates at 26,000 BTU per hour and says heats up to 1,350 square feet.
Makers rate heating area in their own conditions, so read 1,350 square feet as a ceiling; the size calculator lists the closest fits for your space.
At full fire it burns about 25 cubic feet of natural gas an hour (its 26,000 BTU/h divided by EIA's heat content for each fuel).
As a vented unit it sends its exhaust outside through the vent system its manual lists, so it leaves room air alone; the vent route has to suit the house.
Fuel, per the listing: Natural Gas. Never connect a gas heater to a fuel it isn't set for.
Ignition: Piezo ignition.
Also on the listing: overall dimensions of 13.9 in (D) x 29.1 in (W) x 23.9 in (H).
The figures, from the maker
Each figure is the maker's or the listing's own, with its source marked. A figure the maker doesn't give is shown as not stated.
| Model number | FNF300T | Retailer |
|---|---|---|
| Power | Gas Powered | Retailer |
| Dimensions (seller) | 13.9"D x 29.1"W x 23.9"H | Retailer |
| Mounting / installation | Built-in | Retailer |
| Heat output (maker) | 26,000 BTU/h | Retailer |
| Features (seller) | Safety Shut Off | Retailer |
| Batteries | 1 AAA batteries required. | Retailer |
| Model name | FNF300T | Retailer |
| Heats up to (maker) | 1,350 sq ft | Retailer |
| Efficiency (maker) | 99.9% | Retailer |
| Venting | no venting required | Retailer |
| Fuel | Natural Gas | Retailer |
| Thermostat | smart thermostat | Retailer |
| Ignition | Piezo ignition | Retailer |
Is it the right heater for the room?
Pick it when
- Clean-venting room heat
- Homes with gas or propane
- Heat without electricity
Pass on it when
- Homes without a vent route
- Homes without gas or propane
Where it wins, where it gives ground
Wins
- 26,000 BTU/h
- Exhaust vented outside
- Natural Gas
- Works in a power cut
Gives ground
- Needs a vent route
- Needs a gas line
Know before you install
- Figures are the maker's own and are rated in the maker's conditions. Installation, venting, chimney, gas and electrical work follow the manual and local code, carried out by a qualified installer.
Heaters to weigh against it
Other gas stoves, fireplaces and inserts in the same heat range
- ProCom PCS150T Gas Fireplace Insert
- ProCom PC36VFC Gas Fireplace Insert
- ProCom PCS100T Gas Fireplace Insert
- Duluth Forge DF450SS-G-REM Gas Fireplace Insert
Every gas stoves, fireplaces and inserts on one chart · All Duluth Forge models listed
Buying this model
The button opens this exact model's listing. Prices and stock change, and installation parts are usually sold separately; check the box contents and the manual's venting list before you order.
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Questions about this model
How much gas does the Duluth Forge FNF300T Gas Fireplace Insert use?
Does the Duluth Forge FNF300T Gas Fireplace Insert need a vent or chimney?
Bottom line
Built for clean-venting room heat.