Smithline - Arch Conversion - Masonry and Prefab Fireplace Glass Doors | Custom
Configurator · Step-by-Step
Configure Your Door
Your Fireplace
Tell us about your fireplace so we can show the right diagram and ensure a perfect fit.
Masonry = built from brick or stone with a chimney. Prefab (factory-built) = a metal firebox, often with a brand name stamped inside.
Your Measurements
Your Arch Opening Measurements
Enter the width and height of your fireplace opening in inches.
Enter all three dimensions of your arch opening in inches. Center peak height drives pricing.
Use these tips to measure your opening with a tape measure, then enter the exact width and height above. AI estimates are for guidance only.
Not sure what to measure?
Talk to a fireplace specialist — free, no commitment.
Narrowest point of the opening
Narrowest point, base to base
Floor to where arch starts curving
Bottom to top of the opening
Floor to highest point (peak)
Decimal or fractions OK — measure to nearest 1/8″. We verify before building.
For perfect arch fit. Manufacturer ships template both ways — you trace your exact arch shape, send it back, frame is cut on a CNC to those measurements. Zero guesswork.
Manufacturer covers shipping both ways. Typical turnaround: template arrives in 3–5 days, traced template returned, frame manufactured to your exact arch.
Door Style
Choose your door type, fit, and handle style.
Handle finish automatically matches the frame color you select in Step 4.
Frame Finish
Select Your Finish.
Not sure about color? Order finish samples $10 each · Free shipping · Get a $10 promo code per sample (max $50) for your fireplace door order
Hold the actual finish in your hand before you commit.
Physical samples ship to your door, each with a unique $10-off code valid 30 days on your order. Stack 5 samples for $50 off your doors.
Glass & Accessories
Choose your glass, mesh screen, and draft control options.
Review & Order
Last step. Review your build, add a photo (optional), then add to cart.
12,000+ orders, hand-checked. Add a photo and our team checks fit before production.
- Stand in front of the fireplace
- Show full opening + hearth
- Natural light, no flash
Money-back guarantee — if your custom door doesn’t fit perfectly.
Save or share configurationWe'll ship a paper template to your address. Trace your arch on it, return in the prepaid envelope. Your door is then cut to that exact shape.
Your email app should have opened with your request pre-filled. Just press Send and we'll ship your free template kit within 24 hours. Email didn't open? Send manually to info@exceptionalfire.com or WhatsApp +1 (949) 619-7824
Smithline Arch Conversion is a custom-made arched fireplace door built from 7-gauge steel bar stock with the 4-inch hand-forged blacksmith profile from the standard Smithline, plus a radius-bent steel arch above the flat masonry lintel — converting a rectangular opening into a traditional arched facade without masonry rework. Powder coat applied after the weld so the curve reads as one stroke. Free Template Kit included. Lead time: 3–5 Weeks after Expert Fit Review.
Options & Features
- Hand-forged blacksmith profile — same 7-gauge bar stock and welder-finished corners as the standard Smithline, now arched
- Radius-bent steel arch above the flat masonry lintel — frame reads continuous, but the arch sits above the original opening so installation does not require masonry rework
- Powder coat applied after the weld so the curve reads as one continuous stroke, not jointed
- Free Template Kit — cardboard template shipped, traced over the opening, and returned so the arch is built to the exact curve
- 4-inch standard frame width · 2½-inch and 3-inch widths available
- 1/2-inch standard overlap per side · 3/16-inch frame depth
- 23 powder-coat finishes — 11 standard at no charge; 12 premium (+$395)
- Cabinet or Bifold (+$135) door style with Hampton strap or forged-knob handles
- Tempered safety glass — Clear, Grey tint, or Bronze tint; mesh replacement included
- Built for flat-lintel masonry only — prefab metal fireboxes cannot accept arch conversion
- Arch Conversion ($465) included · optional Integrated Hood (+$205) and Frame Returns (+$135)
- Made in USA with free freight to the contiguous 48 states
- Custom-made — no returns; Expert Fit Review confirms accuracy before production
- Limited lifetime frame warranty
Smithline Arch Conversion Masonry
Overlap Fit (Arch Conversion)| Std Overlap | 1/2" |
| Max Overlap | Variable |
| Frame Width | 4" |
| Frame Depth | 3/16" |
| Recessed Depth | N/A |
Stoll Iron Door Installation
Step-by-step diagrams for Stoll iron and forged collections. Two parallel sections: 4-step bracket mount above, 4-step frame alignment below.
Need help? Email info@exceptionalfire.com with photos of your fireplace + opening dimensions before installation. We’ll confirm the right hardware and walk you through any tricky step.
Accurate measurements are critical for a custom door. Measure the firebox opening at three points (top, middle, bottom) and use the smallest dimension. View the full measuring guide →
Free freight shipping within the contiguous US. Custom doors ship in 14–21 business days after Expert Fit Review. Quick-Ship doors ship in 2–6 days from inventory.
Returns: Custom-made doors are non-returnable — every order is verified by Expert Fit Review before production. Quick-Ship inventory items have a 30-day return window on unused, uninstalled units. Damage in transit is fully covered — file a claim within 48 hours of delivery.
All doors carry a 5-year warranty against frame defects from Stoll Industries and Design Specialties. Powder-coat finish is warranted against chipping and fading for 5 years. Glass and mesh are warranted against defects for 1 year.
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Frequently Asked
How long does Smithline - Arch Conversion - Masonry and Prefab Fireplace Glass Doors | Custom take to ship?
Custom-built and shipped in 14–21 days. Each order is hand-checked by a specialist before production. Free shipping included on every order.
What is the starting price for Smithline - Arch Conversion - Masonry and Prefab Fireplace Glass Doors | Custom?
Pricing starts at $2,866. Final price depends on size, finish, and add-on options chosen in the configurator.
Where is Smithline - Arch Conversion - Masonry and Prefab Fireplace Glass Doors | Custom made?
Hand-fabricated in Abbeville County, South Carolina. Every door is reviewed by a specialist before it ships.
What is the warranty?
5-year warranty against frame defects. Powder-coat finish is warranted against chipping and fading for 5 years. Glass and mesh are warranted for 1 year.
Does this fit both masonry and prefab fireplaces?
Yes. Smithline - Arch Conversion - Masonry and Prefab Fireplace Glass Doors | Custom is built for both masonry (brick/stone) and prefab (zero-clearance / metal) fireboxes. The configurator asks for your fireplace type, and for prefab we ask for the make and model so we can confirm fit before production.