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Osburn 3500 Wood Fireplace Insert

Osburn 3500 Wood Fireplace Insert

$3,479.00 $4,279.99 19% Off
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Product Details

Manufacturer: Osburn
Osburn Part Numbers: OB03510
Item Number: OSB-OB03510
When it's cold out who do you turn to? We turn to the Osburn 30 Inch 3500 Series Wood Fireplace Insert. Made from high-quality material like cast iron, ceramic, and more this unit is bound to last you for years. With up to 10 hours of burn time this unit will keep you warm all throughout winter as needed. So go ahead and turn to Osburn. We won't blame you.

Venting Requirements: This item requires a chimney with 6" inner diameter.

Customer Q&A with Product Specialists

Ben T. from South Carolina asked:
Is this a non-clearance/high-efficiency stove? Can I use this without a masonry chimney?
Is this a non-clearance/high-efficiency stove? Can I use this without a masonry chimney?
This fireplace insert is specifically designed to only be installed into a masonry fireplace with a masonry chimney system that will have a stainless steel positively-connected liner attached from the appliance to the termination cap 
Answered by: Aaron D. on Dec 16, 2024

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Ithaca from SC asked:
What is the cfm of the fan?
What is the cfm of the fan?
The blower will operate up to 144 CFMs.
Answered by: Kathy O. on Aug 18, 2025

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Matt from Pa 18618 asked:
Is there a chimney max height? I have a 28 foot 6 inch liner
Is there a chimney max height? I have a 28 foot 6 inch liner
To minimize overdraft issues, the maximum chimney height should not exceed 40 feet. 
Answered by: Aaron D. on Aug 18, 2025

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0
Smd from Wisconsin asked:
Does this fireplace require an outside intake air vent?
Does this fireplace require an outside intake air vent?
No, an outside air intake is not required for this insert. 
Answered by: Tyler M. on Oct 14, 2024

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Customer Reviews

Osburn 3500 Wood Fireplace Insert
Star - 1 Star - 2 Star - 3 Star - 4 Star - 5
By David B.
Aug 10, 2024

Efficient Heating: Osburn 3500 Wood Fireplace Insert

Our home has never been warmer! The Osburn 3500 Wood Fireplace Insert is a game-changer, providing exceptional heat distribution and significantly reducing our energy costs. We're thrilled with its performance!
Star - 1 Star - 2 Star - 3 Star - 4 Star - 5
By Russell V.
Aug 10, 2024

Warmth and Comfort in Every Season

Exceptional heat output keeps our home cozy throughout the year, and the captivating flames enhance the aesthetics and ambiance of our living space.
Star - 1 Star - 2 Star - 3 Star - 4 Star - 5
By Karma L.

Efficient Heating for Grand Fireplaces

This fireplace insert delivers cozy warmth to our expansive living room with ease. It boasts a sleek design and offers excellent value for its impressive performance.
4.7
Star - 1 Star - 2 Star - 3 Star - 4 Star - 5
3 Reviews
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