
Osburn • Wood Inserts
Large Inserts
High-capacity choices for larger fireplaces and bigger heating areas. We will help compare the current models, confirm the right size, and coordinate the chimney, clearances, hearth, and surrounding finish.
Buying guidance
Why choose Large Inserts?
High-capacity choices for larger fireplaces and bigger heating areas. Use the short sections below to see where it fits, what separates it, and what should be settled before ordering.
Best forTurning a masonry fireplace into a serious heater
High-capacity choices for larger fireplaces and bigger heating areas.
What makes it different2 configurations within one family
The current collection includes 3500-I: Current model; Matrix 2700: Current model. Part of the Large Inserts family.
What to plan forInspect the chimney and measure the masonry opening
Confirm the exact appliance, chimney route, clearances, outside-air needs, floor protection, and surrounding finish before construction. The current choices shown here include Current model, Current model.
Compare nearby wood choices 3 alternatives
Compact Inserts
Smaller inserts for tighter masonry openings and modest heating needs.
2000 Insert Family
One proven firebox offered in traditional, minimalist, and contemporary presentations.
Traditional Inserts
Three capacities with clean traditional styling, from smaller rooms through large spaces.
Current collection
Models and sizes
3500-I
Current model
Part of the Large Inserts family. We will confirm opening, heat needs, chimney requirements, and available finishes.
Matrix 2700
Current model
Part of the Large Inserts family. We will confirm opening, heat needs, chimney requirements, and available finishes.
From the Gagnon website
Project photos and design examples
These Gagnon website images help show room scale and finish possibilities. Some may feature earlier versions in the same family, so current specifications and options should be confirmed before ordering.

Before ordering
Plan the complete wood-burning system
Match the appliance to the room
We will compare firebox size, heating goals, burn style, loading, and the space available for the appliance.
Confirm chimney and clearances
Chimney height and routing, floor protection, mantel clearances, and outside-air requirements must be coordinated early.
Choose the finished appearance
Compare doors, surrounds, pedestal or leg choices, hearth materials, and surrounding brick or stone as one design.
Details and support
Resources
Official Large Inserts information
Use the manufacturer page for current manuals, detailed specifications, emissions data, and configuration resources.
Get help from Gagnon
We can narrow the choices, verify the installation plan, and provide current product and installation pricing.
Let’s plan the right wood-burning product
Send us your opening dimensions or room plans, or visit the showroom to compare the choices in person.