3500 I wood insert

Enjoy serious heat and style with the Osburn 3500 Wood Insert. This powerhouse, EPA‑2020 certified insert delivers up to 110,000 BTU, efficiently warming 1,000–2,700 sq ft with 77 % efficiency and ultra-low emissions (~1.3–1.6 g/h). Its expansive 3.5 cu ft firebox handles 22″ logs for long burn times (up to 10 hours), and a 144 CFM blower ensures even warmth throughout your home. Clean, sleek, and customizable with door overlays and faceplates, it’s the ideal solution for large spaces—even in harsh winters.