$110 OFFMASONRY
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HEARTHCRAFT
Ardmore Flat Black Masonry Fireplace Door | Standard
From$375
$485
Read the full guide
Why choose steel over aluminum?
The metal your door is built from is the single most important fit decision, and it comes down to heat and weight. Steel is a denser, stronger alloy than aluminum. It tolerates higher surface temperatures and radiant heat, so a steel frame can be installed closer to an active fire without warping or discoloring over time. That makes steel the right call for true masonry fireplaces — the brick-and-mortar, full-burning wood fireboxes where heat is highest.
Steel also carries a heavier, more substantial feel in the hand. The frames are typically welded rather than mechanically joined, with thicker stock that holds tight tolerances and a forged, architectural presence at the hearth. If you want a door that looks and feels like permanent metalwork rather than a lightweight retrofit, steel delivers it.
Aluminum, by contrast, is lighter and naturally corrosion-resistant, and it suits prefab (zero-clearance) fireplaces — the factory-built metal fireboxes common in newer homes — where heat at the face is lower and weight matters more. If you're not sure which firebox you have, our team confirms it during your Fit Review at no charge.
Inside fit vs. overlap fit — and what to measure
Every steel door is built to one of two mounting styles. Inside fit (recessed) sits inside the fireplace opening, flush with the masonry, for a clean built-in look. Overlap fit (overlay) mounts on the flat face around the opening and covers the edges, which hides uneven or chipped brick and is the more forgiving choice for rougher openings.
To get started, measure the width and height of your firebox opening at the top, middle, and bottom — masonry is rarely perfectly square, and we build to the real numbers. For overlap fit, also measure how much flat surface you have around the opening (you'll need clearance for the frame to seal against). Note the lintel (the steel or masonry bar spanning the top of the opening) and any damper handles that protrude, since they affect door height and clearances. You don't need to be precise to the millimeter to shop — send us rough numbers and a photo, and the Fit Review handles the rest.
Custom-built to your opening
These are not stock sizes pulled off a shelf. Most steel doors here are made to order, sized to your exact opening within the model's range, and many handle large and oversized masonry fireplaces that off-the-shelf doors can't cover. Frame finishes, glass, and mesh options vary by model, so each product page shows what's available for that door.
Who steel is for
Choose steel if you have a wood-burning masonry fireplace, want maximum durability against high heat, prefer a heavier welded frame, or are matching an existing wrought-iron or forged aesthetic. If you have a prefab metal firebox or want the lightest possible door, compare our aluminum collection instead.
Buy with confidence
Custom sizing makes some buyers nervous — that's exactly why every order includes a free Expert Fit Review before fabrication. A specialist checks your measurements, confirms your firebox type, and verifies inside vs. overlap fit so the door arrives ready to install. It's the safeguard that lets you order a fully custom steel door without the guesswork.