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Textured Black Thin Line Inside Fit Masonry Fireplace Door

Be sure to take all measurements to the nearest 1/16” using a steel tape measure. Note any irregularities around the opening of the fireplace, such as projecting or recessed brick, and advise us before you place an order. For complex custom applications, a photograph of the fireplace will prove very helpful.


INSIDE FIT (inside firebox opening)

When the fireplace door is smaller than the opening of the fireplace, and fits inside the fireplace opening. Measure the width of the opening at the top and again at the bottom. We need the exact minimum width. Next, measure the height of the opening from the hearth/floor to either the bottom of the lintel bar or the bottom of the finishing material (brick, marble, etc). We need the exact minimum height.


DO NOT make adjustments to sizes, we need the EXACT OPENING size


Size Range For Pricing: Up To 42"W and Up To 28"H


Short description:

   Free Shipping on All Orders Continental United States!  Free Shipping | Fabrication Time 4-5 Weeks For BLACK Doors

INSIDE FIT - Generally, the clearance tolerance gaps can be filled from the backside of the frame using high temp silicone RTV. If the gaps become excessive (as in a stone fireplace), it may be necessary to mortar in the enclosure. Clearance tolerance gaps are determined by the manufacturer according to your opening size.
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If no images are submitted with your order, it will be placed on hold until we receive a photo of your fireplace. Please send your image to [email protected].

Upgrade your living space effortlessly with the Thin Line Inside Fit Custom Masonry Fireplace Door in Textured Black—an economical and stylish accessory brought to you by Thermo-Rite Manufacturing in Akron, OH.


Sleek Inside-Fit Design: Handcrafted from welded steel, the Thin Line Inside Fit enclosure is designed for both zero-clearance and masonry applications. It offers an affordable opportunity to enhance your fireplace without breaking the bank.

Textured Black Finish: The Thin Line features a textured black finish, providing a minimalist and sleek appearance that complements any home decor.

CV2-Tracked Bi-fold Doors: The enclosure comes standard with CV2-tracked bi-fold doors, offering a variety of choices with bronze, clear, or grey glass. The inside fit design makes it suitable for a range of fireplace openings.

Unobstructed View: Enjoy an unobstructed view of the flames with the Thin Line's thin steel frame. This inside fit enclosure provides an impressive viewing area for masonry fireplaces only.

Easy Installation: The Thin Line comes fully assembled with mounting hardware included, ensuring a hassle-free installation process. Free shipping is included for your convenience.

Lifetime Warranty: Benefit from a 5-year warranty on the door frame and a lifetime warranty on the 1/4-inch thick tempered safety glass. The durable welded steel frame is 3/4 inch wide by 3/4 inch deep.

Glass Options: Choose clear glass for your tracked or trackless full swing doors, or opt for a subtle bronze or grey tint to match your preference.

Slim Frame Design: The Thin Line features a slim frame with no trim on the sides of the glass panels, providing a generous and stylish view of the flames.

No Spark Protection: Please note that spark protection is not available for the Thin Line model.

Top-Mounted Comfort Grip Handles: The enclosure includes top-mounted comfort grip handles for easy operation.

Assembly: Some assembly is required, but worry not—all mounting hardware is included for your convenience.

Enhance your living space with the Thin Line Glass Fireplace Enclosure—economical, yet crafted with style and quality to last a lifetime. Please note that this is an inside fit only door, providing an impressive and unobstructed view of the flames in your masonry fireplace. Proudly made in the USA!


  • Fireplace Type: Masonry
  • Door Fit: Inside
  • Door Type: Tracked Bi-Fold Swing Doors
  • Material: 3/4" Wide x 3/4" Deep Steel Frame
  • Powder Coat Finish Color: Textured Black
  • Glass: 1/4" Tempered Safety Glass (lifetime warranty)
  • Glass Tint: Clear | Grey | Bronze
  • Ceramic Glass: N/A
  • Mesh Screens: N/A
  • Damper: N/A
  • Airtight Option: N/A
  • Assembly: Some Assembly Required
  • Mounting: Hardware Included


Manufacturer's Warranty

Thermo-Rite warrants all new glass fireplace enclosures to be free from defects in material and workmanship for a period of five (5) years from the ultimate sale or installation if performed by the dealer. The warranty is void if the damage is due to improper installation or improper operation. Thermo-Rite warrants tempered glass a lifetime to the original owner.

The doors turned out great. Arrived quicker than they were supposed to.
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Is this suitable for a floating (no hearth) fireplace?

Asked by Gareth | 02-23-2022, 03:52 PM | 1 answer(s)

How much air gap clearance will there be around the four sides of the frame?

Asked by Elliott Pisor | 01-31-2019, 01:30 AM | 1 answer(s)

Can the chalet thin-line masonry fireplace screen be used with gas logs (the type not being used to heat a room)?

Asked by John Pararas | 11-13-2018, 05:19 PM | 1 answer(s)

can the Thin Line Fireplace Door (for zero clearance fp) be ordered in Textured Grey Iron finish (I need to order 2) instead of the Textured Black??????? If yes, is this at the same price?

Asked by KEITH | 12-11-2015, 02:39 AM | 1 answer(s)
Last updated on February 14th 2024.



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