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Monessen Berkley Oak Refractory: detailed oak gas logs for your existing fireplace
The Monessen Berkley Oak Refractory is a vent free gas log set for the fireplace you already have. It comes 18, 24, or 30 inches wide. The seven logs are cast from refractory cement, a material that holds sharp bark and grain detail. The black Natural Blaze burner makes tall yellow flames over a glowing ember bed. It puts out up to 37,000 BTU to warm your room. It is dual rated, so it can also go in a vented fireplace with the damper open.
The price is for the logs. The burner is a required pick on the page, in millivolt or IPI. Order it for natural gas or propane. Vent free means it needs no chimney or vent pipe at all, and nearly all the heat stays in the room. Check your local code first, since some areas restrict vent free heaters. On the page you pick the size, the fuel, and the burner ignition. Millivolt means it has a standing pilot and needs no electricity, so it keeps working when the power is out. IPI means intermittent pilot ignition: it lights the pilot only when you turn the fire on, so no gas burns while the fire is off. Pick one on the page. You can add a hand held on and off remote or a touchscreen remote. Prefer logs that glow with the fire? See the Monessen Berkley Oak Fiber Ceramic gas log set. The Monessen Berkley Oak Refractory ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Features
Refractory Cement Technology
Provides life-like realism with exquisite detail for an inviting fireside experience.
IntelliFire® Plus
Monitors safe performance, saves fuel, and lets you program memory settings via intermittent pilot ignition system.
Natural Blaze Burner Technology
Exclusive Natural Blaze Technology produces instant dancing yellow flames and active ember bed
Vent-free Technology
Easy, affordable and attractive, vent-free gas fireplace logs are a perfect way to warm your space.
Which Gas Logs Do I Need?
Gas Log Finder
Tell us about your fireplace and we’ll explain vented versus vent-free, work out the log size that fits, and show the sets that match.
Where will the gas logs go?
Does your fireplace have a working chimney?
A real wood-burning fireplace with a flue and a damper you can open.
What matters most to you?
Vented logs look the most like a real wood fire. Vent-free logs put out the most heat.
How wide is the front opening of your fireplace?
Measure across the front of the opening, from side to side. Logs sit a few inches narrower than the opening.
inches
Is the fireplace open on one side or two?
Which look do you like?
|
Specifications
SKU: BO18-R | BO24-R | BO30-R w/ NBST27-F
| Model | Berkley Oak 18 – Refractory | Berkley Oak 24 – Refractory | Berkley Oak 30 – Refractory |
|---|---|---|---|
| Size | 18 | 24 | 30 |
| Minimum Opening Front Width | IPI: 26″; MIL: 26″ | IPI: 31″; MIL: 29″ | IPI: 33″; MIL: 33″ |
| Minimum Opening Height | IPI: 17″; MIL: 17″ | IPI: 17″; MIL: 17″ | IPI: 17″; MIL: 17″ |
| Minimum Opening Depth | IPI: 13″; MIL: 13″ | IPI: 13″; MIL: 13″ | IPI: 13″; MIL: 13″ |
| Minimum Opening Back Width | IPI: 18″; MIL: 18″ | IPI: 25-1/4″; MIL: 22-1/4″ | IPI: 25-1/4″; MIL: 25-1/4″ |
| Fuel Type | Natural Gas or Liquid Propane | Natural Gas or Liquid Propane | Natural Gas or Liquid Propane |
| BTU/hr Input | 28,000 NG / 27,000 LP | 37,000 | 37,000 NG / 36,000 LP |
| Heating Capacity | Up to 950 sq ft | Up to 1,300 sq ft | Up to 1,300 sq ft |
| Ignition System | Millivolt or IPI | Millivolt or IPI | Millivolt or IPI |
Manuals and Catalog
Product Brochures
Owner’s Manual
Natural Blaze Vented/Unvented Gas Log Set (Pre-October 2019)
Service Parts
Berkley Oak (BO18-R, BO18-F) 18in. Log Set
Berkley Oak (BO24-R, BO24-F) 24in. Log Set
Berkley Oak (BO30-R, BO30-F) 30in. Log Set
Natural Blaze Hearth Kit 18″ (NB18NIF-B/NB18PIF-B)
Natural Blaze Hearth Kit 18″ (NB18NV-B/NB18PV-B)
Natural Blaze Hearth Kit 24″ (NB24NIF-B/NB24PIF-B)
Natural Blaze Hearth Kit 24″ (NB24NV-B/NB24PV-B)
Accessory Manuals
FAQ
Can the Berkley Oak really go in either a vented or vent-free fireplace?
Yes. This set is dual rated, meaning the same seven cast logs and burner can be installed in a vented fireplace or in a vent-free setting. That flexibility is genuinely uncommon among ventless gas logs, and it means you are not locked into one type of hearth – the set adapts to the installation you already have or the one you are planning.
How much room can the 18-inch set actually warm?
Rated at 28,000 BTU on natural gas, the 18-inch version heats up to 950 square feet – a serious chunk of most homes. The 24 and 30-inch versions step up to 37,000 BTU and cover up to 1,300 square feet. Run vent free, the heat those numbers describe stays in the living space instead of disappearing up a flue.
What does refractory cement do for the look of the logs?
Refractory cement is the realism material. Monessen casts each log from it because it holds exquisite detail, giving the stack a life-like character that reads as real oak up close rather than an obvious replica. It is the version to choose when convincing detail matters most to you; the same set is also offered in ceramic fiber for a different effect.
Where do the instant dancing yellow flames come from?
That is Natural Blaze burner technology, exclusive to this line. The burner is engineered to produce dancing yellow flames instantly – no long warm-up before the fire looks right – and the flames erupt up through the stacked logs rather than in front of them, so the fire has depth and movement from the moment it lights.
Should I order the IPI or millivolt ignition version?
Both are offered on every size. Millivolt is the traditional system and operates without household electricity; IPI is the intermittent pilot option with smarter fuel management. One practical wrinkle: the 24-inch set needs a 31-inch minimum front width with IPI but only 29 inches with millivolt, so a tight opening can make the decision for you. Either version is remote ready.
Do these come set up for natural gas or propane?
You choose at ordering time – every size is offered for either natural gas or liquid propane. Expect slightly different ratings by fuel: the 18-inch runs 28,000 BTU on natural gas versus 27,000 on propane, and the 30-inch runs 37,000 versus 36,000. Match the fuel to whatever supply already serves your fireplace and the set performs as specified.
What does 7-piece mean on a gas log set like this?
It is simply the log count: seven individual refractory cement logs make up the stack that sits over the burner. More pieces make a fuller, more layered fire – the flames come up through gaps in a stack that reads like a real load of firewood, not a single molded shape. All three sizes, 18, 24, and 30 inches, are 7-piece sets.
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