Osburn Matrix 1900 Wood-Burning Fireplace Insert | OB01900
Refined Cast Iron Elegance Meets Efficient Wood Heat
Transform your existing masonry fireplace into a high-efficiency heat source with the Osburn Matrix 1900 wood-burning fireplace insert.
Key Features
- EPA 2020 certified, non-catalytic wood insert
- Heats 250–1,200 sq. ft. efficiently
- Decorative cast iron faceplate with large viewing glass
- Flush-mount blower included for enhanced heat circulation
Product Features
⚠️ Installation Requirement (Important Safety Notice)
Wood-burning fireplace inserts must be installed only in an existing masonry fireplace and never in a wooden or combustible structure.
This requirement ensures safe operation and compliance with UL and EPA standards.
High-Efficiency EPA-Certified Heating
The Matrix 1900 is EPA 2020 compliant, producing just 1.5 g/h of particulate emissions while delivering up to 45,000 BTUs of dependable wood heat—ideal for zone heating smaller to mid-sized homes.
Elegant Cast Iron Faceplate Design
A beautifully detailed cast-iron surround with a patterned upper louver and decorative columns gives this wood fireplace insert a refined, built-in appearance that elevates traditional and transitional hearths alike.
Compact, Fireplace-Friendly Installation
Tapered top and sides allow the Matrix 1900 to fit easily into smaller masonry fireplaces, making it a strong option for replacing inefficient open fireplaces without major structural modifications.
Panoramic Glass Viewing Area
The large ceramic glass door provides an expansive view of the flame, while the integrated air-wash system helps keep the glass cleaner during operation.
Built-In Blower for Improved Heat Distribution
A 90 CFM flush-mounted blower is included to move warm air into the room more effectively, increasing comfort without compromising the insert’s clean, flush aesthetic.
Reduced Maintenance Combustion Chamber
The deep-bottom firebox design allows ash to accumulate naturally, reducing cleaning frequency while maintaining efficient airflow and consistent burn performance.
Product Specifications
Appliance Performance
| Specification |
Details |
| Fuel Type |
Dry cordwood (16" recommended) |
| Recommended Heating Area |
250 – 1,200 sq. ft. |
| Overall Firebox Volume |
1.1 cu. ft. |
| EPA Loading Volume |
1.03 cu. ft. |
| Maximum Burn Time |
Up to 7 hours |
| Maximum Heat Output |
45,000 BTU/h (13.19 kW) |
| Heat Output Range |
8,471 – 31,700 BTU/h |
| Average Overall Efficiency |
75% (HHV) / 80% (LHV) |
| Optimum Overall Efficiency |
82% |
| Optimum Heat Transfer Efficiency |
78% |
| Average Particulate Emissions |
1.5 g/h |
| Average CO |
34 g/h |
General Features
| Specification |
Details |
| Combustion Technology |
Non-catalytic |
| EPA Certification |
EPA 2020 approved |
| Maximum Log Length |
17" |
| Log Positioning |
Loading over width |
| Chimney / Liner Diameter |
6" |
| Chimney Type |
ULC-S635, CAN/ULC-S640, UL 1777 liner |
| Minimum Chimney Height |
12 ft |
| Baffle Type |
C-Cast or equivalent |
| Mobile Home Approved |
No |
| Blower Included |
Yes – 90 CFM |
| Door Type |
Single, cast iron frame with ceramic glass |
| Glass Type |
Ceramic glass |
| Glass Dimensions (W × H) |
18" × 8 1/8" |
| Glass Air-Wash System |
Yes |
| Moulded Refractory Bricks |
Yes |
| Secondary Air System |
Stainless steel |
| Steel Thickness (Body) |
3/16" |
| Steel Thickness (Top) |
3/16" |
| Warranty |
Limited lifetime |
Dimensions
| Specification |
Details |
| Overall Height |
23 7/8" |
| Overall Width |
36" |
| Overall Depth |
21" |
| Standard Faceplate Width |
36" |
| Standard Faceplate Height |
30" |
| Door Opening Height |
7 7/8" |
| Door Opening Width |
18 1/4" |
| Firebox Height |
8 7/8" |
| Firebox Width |
16 3/4" |
| Firebox Depth |
12 3/8" |
| Shipping Weight |
332 lb (151 kg) |
Fireplace Opening Requirements
| Specification |
Minimum Required |
| Opening Height |
19" |
| Opening Width |
25" |
| Opening Depth |
15 1/2" |
Certifications & Standards
| Specification |
Details |
| USA Emissions Standard |
EPA |
| Canadian Emissions Standard |
CSA B415.1-10 |
| USA Safety Standard |
UL 1482, UL 737 |
| Canadian Safety Standard |
ULC S628 |
| Tested & Listed |
Accredited laboratory (CAN/USA) |
Minimum Clearances to Combustibles
| Clearance Type |
Canada |
United States |
| Top (from platform) |
72" |
72" |
| Combustible Side Mantle to Unit |
1" |
1" |
| Combustible Top Mantle to Unit |
34" |
34" |
| Combustible Side Wall to Unit |
16" |
16" |
| Shelf to Base of Fireplace |
34" |
34" |
Warranty
Warranty Coverage – Osburn Wood Stoves & Inserts
Osburn wood-burning appliances are backed by a limited lifetime manufacturer’s warranty that covers specific components for varying durations. Coverage applies to the original purchaser and is subject to proper installation and use per the owner’s manual.
Warranty Coverage:
| Component / Description |
Parts Coverage |
Labor Coverage |
| Combustion chamber (welds only) and cast-iron door frame |
Lifetime* |
5 years |
| Ceramic glass**, plating (manufacturing defect**), convector air-mate |
Lifetime* |
N/A |
| Surrounds, heat shields, ash drawer, steel legs, pedestal, trims (aluminum extrusions), vermiculite, C-Cast or equivalent baffle**, secondary air tubes**, removable stainless steel combustion chamber, deflectors, and supports |
7 years* |
N/A |
| Handle assembly, glass retainers, and air control mechanism |
5 years |
3 years |
| Removable carbon steel combustion chamber components |
5 years |
N/A |
| Standard and optional blower, heat sensors, switches, rheostat, wiring, and electronics |
2 years |
1 year |
| Paint (peeling**), gaskets, insulation, ceramic fiber blankets, refractory bricks (fireplace only*) and other options |
1 year |
N/A |
| All replacement parts supplied under warranty |
90 days |
N/A |
Important Warranty Notes
- Lifetime coverage is limited to one replacement.
- Photo documentation may be required to validate claims.
- Warranty applies to manufacturing defects only.
- Damage caused by improper installation, misuse, abuse, over-firing, or failure to follow installation instructions is not covered.
- Labor coverage applies only where explicitly stated.
- Warranty terms are subject to the manufacturer’s full warranty policy.
What This Means for Homeowners
Osburn’s warranty reflects long-term confidence in the structural components that matter most—while clearly defining wear items and electronics that naturally experience use-related aging.
For full warranty eligibility:
- Installation must comply with the owner’s manual
- Appliance must be operated using approved fuels
- Routine maintenance must be performed as recommended
About the Manufacturer
Who Is Osburn?
Osburn is a Canadian manufacturer specializing in high-efficiency wood stoves and zero-clearance wood fireplaces designed for real-world home heating. The brand is widely recognized in North America for producing EPA-certified wood-burning appliances that combine strong heat output, clean combustion, and durable construction.
Founded in Québec, Canada, Osburn has built its reputation around performance-driven wood heating, offering products capable of heating entire homes while meeting modern emissions and safety standards.
What Is Osburn Known For?
Osburn is best known for:
- Wood stoves & inserts with high BTU output
- EPA 2020–certified wood-burning technology
- Non-catalytic combustion systems that simplify operation
- Large fireboxes and extended burn times
- Canadian manufacturing and engineering standards
Osburn stoves & inserts are designed to deliver both ambiance and functional heat, making them suitable for homeowners seeking a real wood fire that also contributes meaningful warmth.
Where Are Osburn Wood Stoves Made?
Osburn fireplaces and wood stoves are designed and manufactured in Canada. The brand operates under Stove Builder International (SBI), one of North America’s largest and most established hearth appliance manufacturers.
This manufacturing structure allows Osburn to maintain:
- Consistent quality control
- In-house testing and certification
- Long-term parts availability
- Proven reliability across product lines
Are Osburn Products EPA Certified?
Yes. Osburn fireplaces and stoves meet EPA 2020 emissions standards, making them compliant for installation in the United States. These certifications ensure:
- Lower particulate emissions
- Improved fuel efficiency
- Cleaner-burning fires compared to older wood fireplaces
Many Osburn models are also certified to UL and ULC safety standards for use in both the U.S. and Canada.
Can Osburn Fireplaces Be Used for Heating a Home?
Yes. Many Osburn wood stoves can heat 750 to over 2,000 square feet, depending on the model, home layout, and installation. While often installed for ambiance, Osburn stoves are frequently used as:
- Primary heat sources in open-concept homes
- Supplemental heating systems to reduce reliance on fossil fuels
- Emergency heat during power outages
Osburn’s Design Philosophy: Beyond Fire
Osburn describes its approach as “Beyond Fire”—a focus on preserving the authenticity of a real wood fire while reimagining it for modern homes. This philosophy emphasizes:
- Efficient combustion
- Clean-burning technology
- Durable materials
- Contemporary styling that fits today’s interiors
The result is a fireplace that delivers more than just appearance—it delivers dependable heat.
Why Homeowners Choose Osburn
Homeowners choose Osburn fireplaces because they offer:
- Canadian-made quality
- High heat output with clean emissions
- EPA 2020 compliance
- Zero-clearance installation flexibility
- Large glass viewing areas
- Long-term manufacturer support
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