Overview
The Osburn Matrix 1900 Wood-Burning Insert combines timeless cast-iron styling with efficient performance in a compact design. Its detailed cast-iron faceplate features a patterned upper louver and sculpted columns that frame the large glass door, providing a beautiful panoramic view of the flames. A discreet black handle, removable air-control handle, and flush-mounted blower keep the focus on the insert’s refined design. Designed for smaller fireplace openings, the Matrix 1900 features tapered sides and top to simplify installation in more compact hearths. Its deep combustion chamber provides additional room for ash accumulation, helping reduce the frequency of cleaning while making everyday operation more convenient.
Warning: Wood-burning inserts must only be installed inside an existing masonry fireplace and never in a wooden or combustible structure.
Main Features:
- Heats Up to 1,200 Sq. Ft. – Ideal for smaller to medium-sized living spaces.
- Up to 7-Hour Burn Time – Provides lasting warmth with fewer reloads.
- Compact Fireplace Fit – Requires a minimum fireplace opening of just 19" H x 25" W x 15 1/2" D.
- Non-Catalytic Combustion – Offers straightforward operation and dependable heating performance.
- Low 1.5 g/h Emissions – Designed for clean, efficient wood burning.
- Blower Included – Helps distribute warm air more effectively throughout the room.
- Fits Logs Up to 17" – Accommodates commonly sized firewood.
- Moulded Refractory Bricks – Help retain heat and protect the firebox.
- 6" Chimney Connection – Uses a standard 6" chimney liner.
- 1.1 Cu. Ft. Firebox – Compact capacity designed for efficient heating.
Specifications:
- Model: OB01900
- Fuel Type: Wood Burning
- Max Heat Output: Max Heat Output 45,000 BTU/hr
- Viewing Area: 18" W X 8 1/8" H
- Unit Dimensions: 36" W x 23 7/8" H x 21" D
- Firebox Dimensions: 16 3/4" W × 8 7/8" H × 12 3/8" D
- Door Opening Dimension: 18 1/4" W x 7 7/8" H
- Door Type: Single, Glass with Cast Iron Frame
- Glass Type: Ceramic Glass
- Chimney Diameter: (6")
- Maximum Log Length: 17"
- Minimum Chimney Height (Feet): 12'
- Weight: 332 lbs
- Warranty: Limited lifetime

Accessories:
- Door Overlay - Black Door Overlay, Brushed Nickel Door Overlay
- Firescreen - Rigid Fire Screen
- Liner Adapter - Offset Liner Adapter
- Air Intake - 5" Fresh Air Intake Kit With 4' Of Insulated Flex Pipe, 5" Fresh Air Intake Kit With Register, Airtight Damper, & 10' Insulated Flex Pipe
Warranty
- Lifetime Coverage – Combustion chamber welds and cast iron door frame. Labor covered for 5 years.
- Lifetime Parts Coverage – Ceramic glass, qualifying plating manufacturing defects, and convector air-mate. No labor coverage.
- 7-Year Parts Coverage – Surrounds, heat shields, ash drawer, steel legs, pedestal, aluminum trims, vermiculite, C-Cast or equivalent baffle, secondary air tubes, removable stainless steel combustion chamber, deflectors, and supports.
- 5-Year Parts / 3-Year Labor – Handle assembly, glass retainers, and air control mechanism.
- 5-Year Parts Coverage – Removable carbon steel combustion chamber components.
- 2-Year Parts / 1-Year Labor – Standard and optional blowers, heat sensors, switches, rheostats, wiring, and electronics.
- 1-Year Parts Coverage – Paint peeling, gaskets, insulation, ceramic fiber blankets, qualifying refractory bricks, and other options.
- Replacement Parts – Parts replaced under warranty are covered for 90 days.
- Lifetime Coverage Limit – Parts with lifetime coverage are limited to one replacement.
Product Resources
The Osburn Matrix 1900 Wood-Burning Insert combines timeless cast-iron styling with efficient performance in a compact design. Its detailed cast-iron faceplate features a patterned upper louver and sculpted columns that frame the large glass door, providing a beautiful panoramic view of the flames. A discreet black handle, removable air-control handle, and flush-mounted blower keep the focus on the insert’s refined design. Designed for smaller fireplace openings, the Matrix 1900 features tapered sides and top to simplify installation in more compact hearths. Its deep combustion chamber provides additional room for ash accumulation, helping reduce the frequency of cleaning while making everyday operation more convenient.
Warning: Wood-burning inserts must only be installed inside an existing masonry fireplace and never in a wooden or combustible structure.
Main Features:
- Heats Up to 1,200 Sq. Ft. – Ideal for smaller to medium-sized living spaces.
- Up to 7-Hour Burn Time – Provides lasting warmth with fewer reloads.
- Compact Fireplace Fit – Requires a minimum fireplace opening of just 19" H x 25" W x 15 1/2" D.
- Non-Catalytic Combustion – Offers straightforward operation and dependable heating performance.
- Low 1.5 g/h Emissions – Designed for clean, efficient wood burning.
- Blower Included – Helps distribute warm air more effectively throughout the room.
- Fits Logs Up to 17" – Accommodates commonly sized firewood.
- Moulded Refractory Bricks – Help retain heat and protect the firebox.
- 6" Chimney Connection – Uses a standard 6" chimney liner.
- 1.1 Cu. Ft. Firebox – Compact capacity designed for efficient heating.
Specifications:
- Model: OB01900
- Fuel Type: Wood Burning
- Max Heat Output: Max Heat Output 45,000 BTU/hr
- Viewing Area: 18" W X 8 1/8" H
- Unit Dimensions: 36" W x 23 7/8" H x 21" D
- Firebox Dimensions: 16 3/4" W × 8 7/8" H × 12 3/8" D
- Door Opening Dimension: 18 1/4" W x 7 7/8" H
- Door Type: Single, Glass with Cast Iron Frame
- Glass Type: Ceramic Glass
- Chimney Diameter: (6")
- Maximum Log Length: 17"
- Minimum Chimney Height (Feet): 12'
- Weight: 332 lbs
- Warranty: Limited lifetime

Accessories:
- Door Overlay - Black Door Overlay, Brushed Nickel Door Overlay
- Firescreen - Rigid Fire Screen
- Liner Adapter - Offset Liner Adapter
- Air Intake - 5" Fresh Air Intake Kit With 4' Of Insulated Flex Pipe, 5" Fresh Air Intake Kit With Register, Airtight Damper, & 10' Insulated Flex Pipe
Warranty
- Lifetime Coverage – Combustion chamber welds and cast iron door frame. Labor covered for 5 years.
- Lifetime Parts Coverage – Ceramic glass, qualifying plating manufacturing defects, and convector air-mate. No labor coverage.
- 7-Year Parts Coverage – Surrounds, heat shields, ash drawer, steel legs, pedestal, aluminum trims, vermiculite, C-Cast or equivalent baffle, secondary air tubes, removable stainless steel combustion chamber, deflectors, and supports.
- 5-Year Parts / 3-Year Labor – Handle assembly, glass retainers, and air control mechanism.
- 5-Year Parts Coverage – Removable carbon steel combustion chamber components.
- 2-Year Parts / 1-Year Labor – Standard and optional blowers, heat sensors, switches, rheostats, wiring, and electronics.
- 1-Year Parts Coverage – Paint peeling, gaskets, insulation, ceramic fiber blankets, qualifying refractory bricks, and other options.
- Replacement Parts – Parts replaced under warranty are covered for 90 days.
- Lifetime Coverage Limit – Parts with lifetime coverage are limited to one replacement.
Education
The Osburn Matrix 1900 Wood-Burning Insert combines timeless cast-iron styling with efficient performance in a compact design. Its detailed cast-iron faceplate features a patterned upper louver and sculpted columns that frame the large glass door, providing a beautiful panoramic view of the flames. A discreet black handle, removable air-control handle, and flush-mounted blower keep the focus on the insert’s refined design. Designed for smaller fireplace openings, the Matrix 1900 features tapered sides and top to simplify installation in more compact hearths. Its deep combustion chamber provides additional room for ash accumulation, helping reduce the frequency of cleaning while making everyday operation more convenient.
Warning: Wood-burning inserts must only be installed inside an existing masonry fireplace and never in a wooden or combustible structure.
Main Features:
- Heats Up to 1,200 Sq. Ft. – Ideal for smaller to medium-sized living spaces.
- Up to 7-Hour Burn Time – Provides lasting warmth with fewer reloads.
- Compact Fireplace Fit – Requires a minimum fireplace opening of just 19" H x 25" W x 15 1/2" D.
- Non-Catalytic Combustion – Offers straightforward operation and dependable heating performance.
- Low 1.5 g/h Emissions – Designed for clean, efficient wood burning.
- Blower Included – Helps distribute warm air more effectively throughout the room.
- Fits Logs Up to 17" – Accommodates commonly sized firewood.
- Moulded Refractory Bricks – Help retain heat and protect the firebox.
- 6" Chimney Connection – Uses a standard 6" chimney liner.
- 1.1 Cu. Ft. Firebox – Compact capacity designed for efficient heating.
Specifications:
- Model: OB01900
- Fuel Type: Wood Burning
- Max Heat Output: Max Heat Output 45,000 BTU/hr
- Viewing Area: 18" W X 8 1/8" H
- Unit Dimensions: 36" W x 23 7/8" H x 21" D
- Firebox Dimensions: 16 3/4" W × 8 7/8" H × 12 3/8" D
- Door Opening Dimension: 18 1/4" W x 7 7/8" H
- Door Type: Single, Glass with Cast Iron Frame
- Glass Type: Ceramic Glass
- Chimney Diameter: (6")
- Maximum Log Length: 17"
- Minimum Chimney Height (Feet): 12'
- Weight: 332 lbs
- Warranty: Limited lifetime

Accessories:
- Door Overlay - Black Door Overlay, Brushed Nickel Door Overlay
- Firescreen - Rigid Fire Screen
- Liner Adapter - Offset Liner Adapter
- Air Intake - 5" Fresh Air Intake Kit With 4' Of Insulated Flex Pipe, 5" Fresh Air Intake Kit With Register, Airtight Damper, & 10' Insulated Flex Pipe
Warranty
- Lifetime Coverage – Combustion chamber welds and cast iron door frame. Labor covered for 5 years.
- Lifetime Parts Coverage – Ceramic glass, qualifying plating manufacturing defects, and convector air-mate. No labor coverage.
- 7-Year Parts Coverage – Surrounds, heat shields, ash drawer, steel legs, pedestal, aluminum trims, vermiculite, C-Cast or equivalent baffle, secondary air tubes, removable stainless steel combustion chamber, deflectors, and supports.
- 5-Year Parts / 3-Year Labor – Handle assembly, glass retainers, and air control mechanism.
- 5-Year Parts Coverage – Removable carbon steel combustion chamber components.
- 2-Year Parts / 1-Year Labor – Standard and optional blowers, heat sensors, switches, rheostats, wiring, and electronics.
- 1-Year Parts Coverage – Paint peeling, gaskets, insulation, ceramic fiber blankets, qualifying refractory bricks, and other options.
- Replacement Parts – Parts replaced under warranty are covered for 90 days.
- Lifetime Coverage Limit – Parts with lifetime coverage are limited to one replacement.





