Categories October Surprise 2024 Grate Heaters | Fireplace Grate Heaters & Fireplace Doors with Blowers Post author By Post date October 18, 2026 Shop fireplace grate heaters and fireplace doors with blower for masonry and prefab fireplaces. Boost heat output up to 40,000 BTUs with our grate heaters and custom door + blower combos.