SBI Firebox Families: Comparing Drolet and Osburn Spec Sheets

Drolet and Osburn are brands of the same Quebec manufacturer, SBI (Stove Builder International). Drolet lists SBI’s technical-support address (tech@sbi-international.com) on its product pages (Drolet), and Osburn’s manuals and catalog are hosted on SBI’s servers (Osburn catalog). Wood-stove owners often notice that some models from the two brands publish the same firebox numbers. Here is what the spec sheets actually show, and what they don’t.

On this page

1. Example: Drolet Escape 1500 and Osburn 1700
2. What matching specs do and don’t tell you
3. Use the finder
4. Why makers sell sister models
5. What to check before choosing between sister models
6. What we don’t know
7. How to compare sister models yourself
8. Sources

Example: Drolet Escape 1500 and Osburn 1700

Sources: Drolet Escape 1500, Osburn 1700, Osburn 1700 manual, checked October 12, 2026.

The firebox dimensions and test results match line for line. (Both makers list 1.86 ft³ overall volume; the listed inside dimensions multiply to about 1.82 ft³, so the volume is presumably measured differently. We report the makers’ figures as published.) Other details differ: the published minimum chimney height, the baffle material, the door and finish options, and the price. Osburn’s own spec page also lists a particulate rate (1.26 g/h) that differs from the 2.4 g/h in its current manual, so check the certification label on the unit you buy.

What matching specs do and don’t tell you

• They do suggest the same core firebox design and test data, so on paper the tested burn time and output figures are comparable.
• They don’t prove the stoves are identical. Clearances, approved installations, chimney requirements, warranty and parts can differ by brand and model. Install each stove only according to its own manual and certification label, in accordance with NFPA 211 and local building codes, and ideally installed or at least inspected by an NFI-certified professional.
• Parts aren’t automatically interchangeable. Order parts by your stove’s exact model number.

Use the finder

Our same-firebox finder lists the published firebox figures for each model we’ve covered and shows which ones match. It only uses spec sheets we’ve read and cited; it doesn’t guess.

Why makers sell sister models

Manufacturers with more than one brand often share core designs across them to cover different dealer networks, price points and finishes. Certification testing is expensive, so a shared firebox may share test data. That’s common across the appliance industry and isn’t a problem in itself. It just means two stoves with different names may burn the same way, while still differing in the details that matter for installation and support.

What to check before choosing between sister models

What we don’t know

We haven’t seen a manufacturer statement that these pairs are the same stove, and spec sheets can change between print runs: Osburn’s spec page and its current manual give different particulate figures for the 1700 (1.26 vs 2.4 g/h). Where figures disagree, we report both and point you to the certification label. If you know of a source that clears this up, use our contact page.

How to compare sister models yourself

1. Put the two spec sheets side by side.
2. Compare firebox dimensions, EPA loading volume, output range and efficiency.
3. Then compare what affects your install: clearances, chimney height and type, floor protection, mobile-home or alcove approval.
4. Compare price and dealer support last.