Osburn Stratford II EPA 2020 Wood Burning Fireplace
Classic double cast-iron doors on a clean-burning firebox. The Osburn Stratford II (OB04007) is an EPA 2020-certified non-catalytic wood fireplace rated 80,000 BTU/hr maximum on dry cordwood at 70% optimum efficiency and just 1.2 g/h, for 750 to 2,200 square feet. It frames 37-3/4" wide by 41-5/8" high by 24-7/8" deep with zero clearance to the enclosure, vents through a 6-inch listed chimney, takes 20-inch logs, and ships with its 176 CFM blower. Choose the black or brushed nickel door overlay and the Traditional or Modern faceplate above, both priced on top; from $4,499 for the fireplace alone.
Choose the Stratford II if you want the look of a traditional fireplace in the most compact of Osburn's certified wood fireplaces: double cast-iron doors with a wide 22-1/4-inch view of the fire, the blower already in the box, and an enclosure under 38 inches wide. Its two 8-inch top openings take a Traditional or Modern gravity kit and its 6-inch side opening a forced air kit when you want to move heat to another room. Pick the faceplate to suit the room — Traditional or Modern — and the overlay in black or brushed nickel.
It is not right for an open-door fire in the United States: burning with the doors open behind a rigid fire screen is prohibited wherever a particulate limit applies. It is not for a mobile or manufactured home, and it must never take an unvented gas log set. It needs a full 6-inch listed chimney at least 15 feet tall, an 80-inch ceiling above its base, and 16 inches of non-combustible floor in front. And it is a zone heater, not a furnace — keep a conventional heating system as backup.
Specifications
Frame the enclosure 37-3/4" wide, 41-5/8" high to the first header and 24-7/8" deep, add the thickness of any finishing material inside it, and leave the space above the fireplace empty to 80" from its base; with the fresh air intake plan on 60-3/4" of width and with a forced air kit 72-3/4". The back, sides and floor of the enclosure are zero clearance; the chimney keeps 2". A combustible side mantel may be up to 3" deep and sits at least 8" to the side of the door opening; a combustible side wall stays 13" from the opening; the wall in front stays 48" away. A combustible shelf sits 58" up for a 6" shelf and 64" for a 12" shelf, or 50" to 56" with the optional heat shield; a non-combustible shelf can go 48" up. Floor protection is 16" deep and 41-1/2" wide, R 1.00 unless the fireplace stands on a base of more than 4". The chimney is a 6" CAN/ULC S629 / UL 103 HT system from the approved list — at least 15 feet from the base to the cap, with one support at least. The 176 CFM blower is wired by an electrician; nothing else is electrical.
How the Stratford II compares to the Everest III and Horizon
The Stratford II is the compact one of Osburn's zero-clearance wood fireplaces: 80,000 BTU/hr for 750 to 2,200 sq ft from a 2.5 cu ft firebox on a 6-inch chimney, with the lowest emissions of the three at 1.2 g/h. The Everest III steps up to 85,000 BTU/hr and 750 to 2,500 sq ft with retractable doors; the Horizon is the big one — 95,000 BTU/hr, 1,000 to 2,800 sq ft and a 4.28 cu ft firebox that takes 25-inch logs for up to 11 hours on an 8-inch flue. The Stratford II starts from $4,499; the Everest III from $5,399; the Horizon from $5,824.
Features
- EPA 2020-certified non-catalytic firebox: 80,000 BTU/hr maximum output, 70% optimum efficiency, just 1.2 g/h emissions and up to 8 hours per load
- Double cast-iron doors with air-wash ceramic glass — 22-1/4" x 12-1/2" of visible fire
- 176 CFM blower with rheostat and AUTO / MAN switch comes installed — no blower kit to buy
- Takes 20-inch logs (16-inch recommended) east-west in a 2.5 cu ft firebox, rated for 750 to 2,200 sq ft
- Zero clearance to the enclosure at the back, sides and floor; frames 37-3/4" wide x 41-5/8" high x 24-7/8" deep
- Ready for a Traditional or Modern gravity kit through its two 8" top openings and a forced air kit through the 6" side opening; the fresh-air adapter ships in the box
Answers to common questions
What chimney does the Stratford II need, and is any of it included?
None of the chimney is in the box. The fireplace vents through a 6-inch factory-built chimney listed to CAN/ULC S629 / UL 103 HT (2100 °F) from the approved list (see Table 4 on page 49 of the installation manual) — Olympia Chimney / SBI Ventis and Nexvent, Olympia Champion, Rockford Rock-Vent, DuraVent Dura Tech, Dura Tech Canada DTC, Dura Tech Premium and Dura Plus AC, Selkirk CF Sentinel, Super Pro 2100 and Super Vent 2100, Security Chimney S-2100, Metal Fab Temp Guard, and American Metal HS and HSS — starting with a 6-inch anchor plate on the fireplace. Plan on at least 15 feet from the base of the fireplace to the cap (17 feet with four elbows), at least one support, 2 inches of clearance around the pipe, and 3 feet above the roof. Some brands add a ventilated roof flashing or an attic radiation shield. A masonry chimney works through an insulated liner.
How close can a mantel, a shelf or a side wall be?
The mantel rule here is for a side mantel beside the door opening — up to 3 inches deep, at least 8 inches to the side of the opening. A combustible side wall stays 13 inches from the door opening, and the wall facing the fireplace stays 48 inches away. A combustible shelf above the fireplace goes 58 inches up for a 6-inch shelf, 60 for 8, 62 for 10 and 64 for 12 (add 52 inches to any other depth); Osburn's optional heat shield brings those down to 50, 52, 54 and 56 inches. A non-combustible shelf 6 to 12 inches deep can go 48 inches up, and it will be hot. The ceiling is never lower than 80 inches from the base. Send us your shelf depth if you want it checked — we're here to help!
What goes on the floor in front of it?
A continuous non-combustible surface at least 16 inches deep and 41-1/2 inches wide — 8 inches past each side of the door opening — such as ceramic on a non-combustible panel, concrete board or brick, never over carpet. When the fireplace sits on the floor or on a base of 4 inches or less, that surface needs an R-value of 1.00 (4 inches of brick plus 1 inch of Durock gets you 1.32); on a base of more than 4 inches no R-value is required. A folded metal strip at least 2 inches wide covers the joint between the floor protection and the fireplace, and it is not supplied.
What’s included, what’s required, and what’s optional?
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Included in the box: The fireplace with moulded refractory panels, cast-iron andiron, C-Cast baffle and four secondary air tubes; 176 CFM blower with rheostat and AUTO / MAN switch, installed at the bottom of the fireplace; Double cast-iron doors with air-wash ceramic glass; Top and back standoffs with their screws; 4-inch fresh-air adapter, air intake plate and screws (for the optional outside-air connection); EPA 2020 certification, UL 127 / ULC S610 listing and the Osburn limited lifetime warranty.
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Required to complete the installation, purchased separately: Door Overlay - the black or brushed nickel overlay that finishes the cast-iron door frames; it ships in a separate box; Faceplate - the Traditional or Modern faceplate that closes the front of the enclosure; a faceplate must be installed and it ships in a separate box; Venting - a 6" listed factory-built chimney from the approved list (see pg 49 in the installation manual) or a lined masonry chimney; Floor Protection - a continuous non-combustible surface 16 inches deep and 41-1/2 inches wide in front of the fireplace (R 1.00 unless the fireplace sits on a base of more than 4 inches) with a 2-inch folded metal strip at the joint; Electrical - a house circuit for the included blower, wired by a qualified electrician with the ground on the fireplace frame.
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Optional: The forced air kit and its 6-inch insulated flex pipe, the Traditional or Modern gravity kit, the 4-inch fresh-air intake register with airtight damper and 4-inch insulated intake pipe, the heat shield for a combustible shelf and carrying handles — the fireplace burns and heats without any of them.
Is the blower included, and does the fireplace need electricity?
The 176 CFM blower is included, already installed at the bottom of the fireplace with its rheostat and AUTO / MAN switch; in AUTO it starts when the fireplace warms up and stops when it cools. It needs a house circuit run by a qualified electrician, with the ground attached to the fireplace frame. Nothing else on the fireplace is electrical — it burns and drafts on its own in a power outage; only the blower stops.
Can I burn it with the doors open?
Not in the United States. The Stratford II was tested for open-door use with a fire screen that Osburn sells separately, but in the US, and in any Canadian province with a particulate emissions limit, running a wood fireplace open behind a rigid fire screen is prohibited. Where it is permitted, the screen goes back on after every loading and the fire is never left unattended with it in. With the doors closed the Stratford II runs as the certified heater it was tested to be.
Do I need an outside air kit?
It is optional — room air is the most reliable combustion supply, and outside air matters mainly in a tight house or one with a powerful kitchen exhaust. The fireplace ships with the 4-inch adapter, intake plate and screws; to connect outside air you add the 4-inch fresh-air intake register with its airtight damper and insulated 4-inch HVAC-class duct at least 10 feet long (at most 30, with a P-trap loop against condensation), on the right side or underneath. The outside end goes no more than 10 feet above or 3 feet below the base of the fireplace, above the snow line, and never draws from an attic, basement or garage.
Does buying from The Torch Guys affect my Osburn warranty?
No. The Osburn limited lifetime warranty applies to every Stratford II on this page; it runs from your dated purchase invoice, so keep it and register the fireplace online at osburn-mfg.com with the serial number from the nameplate on the back. The Torch Guys will help you with any claim. The combustion-chamber welds and cast-iron door frame are covered for life on parts (5 years labour), the ceramic glass for life, the C-Cast baffle and secondary air tubes 7 years, the handle, glass retainers and air control 5 years, the blower and its controls 2 years, and paint, gaskets and refractory bricks 1 year. It covers the original purchaser, requires installation by a qualified technician, and is void if anything but cordwood is burned.
