Thin Line Inside Fit Custom Masonry Fireplace Door – Textured Black by Thermo-Rite
If there’s one thing I can’t stand, it’s a beautiful fireplace hiding behind a drafty opening and an awkward metal frame that looks like it lost a bet with time. That’s where the Thin Line comes in—sleek, strong, and so snug it practically hugs your masonry like it was custom-built for it (because, well… it is).
Made from welded steel with the kind of craftsmanship that doesn’t flinch under heat or time, this inside-fit enclosure is minimal in all the right ways. The burnished, powder-coated textured black finish feels quietly elegant, like a little black dress for your hearth—tailored, timeless, and never trying too hard.
And let’s talk size. The Thin Line keeps it slim with a .75-inch frame—just enough to add that finished edge without overwhelming your space. It’s the kind of door that whispers sophistication while keeping your fireplace safe, efficient, and undeniably better looking.
Features I Actually Love:
Welded Steel Construction
No flimsy corners here. This door is solid, dependable, and built to last—like the fireplace version of your favorite cast iron pan.
Minimal Frame, Maximum Style
With a profile that’s just three-quarters of an inch deep and wide, the Thin Line delivers a clean, nearly invisible edge. It’s the fireplace equivalent of flawless concealer—seamless and quietly transformative.
Textured Black Finish
Matte, elegant, and forgiving when it comes to soot smudges. It goes with every design style from rustic farmhouse to modern minimal.
Glass Options
Choose clear, grey, or bronze tempered glass—all at no extra cost and all safety-rated with a lifetime warranty. Because your fireplace deserves more than basic.
Door Styles (Also Included—No Extra Charge):
CV1: Cabinet doors with twin glass panels.
CV2 & FS2: Bi-fold designs for those who love a little drama with their flames.
Optional Spark Protection
Upgrade with a sliding mesh curtain—because while fire is lovely, rogue sparks in your rug are not.
Nadia’s Final Thoughts:
I’ve seen a lot of fireplace doors over the years, and the Thin Line has that rare ability to disappear into your space while still elevating the entire look. It’s smart, it’s solid, and it’s not trying to be flashy—it’s just flat-out functional and beautiful.
If you’re ready to give your fireplace that “just right” look, this is the upgrade that won’t steal the spotlight—but it’ll quietly transform your whole hearth.
Now if only it came with a remote control for keeping Nova off the hearth... but that’s another story.
Understanding Size Ranges
Fireplace doors are listed by size ranges. What does that mean? Simply put, the dimensions you measure for your fireplace opening must fall within the listed width and height range for the door to work. If the measurements don’t fit within those ranges, the door won’t be compatible.
Pro Tip for Overlap Fit Doors
When ordering standard masonry overlap fit doors, always choose the smaller frame size if two options will fit.
Send Me a Picture
To make the process even smoother, please send a picture of your fireplace with your order to [email protected]. A photo helps us ensure the best fit for your fireplace.
Need Help?
If you’re unsure about the measurements or selecting the right door, fill out the Contact Me form, and I’ll personally help you find the perfect fit for your fireplace. Let’s get your fireplace looking fabulous!
Free Shipping | Custom Made At Time Of Order 15-20 Business Days
If there’s one thing I can’t stand, it’s a beautiful fireplace hiding behind a drafty opening and an awkward metal frame that looks like it lost a bet with time. That’s where the Thin Line comes in—sleek, strong, and so snug it practically hugs your masonry like it was custom-built for it (because, well… it is).
Made from welded steel with the kind of craftsmanship that doesn’t flinch under heat or time, this inside-fit enclosure is minimal in all the right ways. The burnished, powder-coated textured black finish feels quietly elegant, like a little black dress for your hearth—tailored, timeless, and never trying too hard.
And let’s talk size. The Thin Line keeps it slim with a .75-inch frame—just enough to add that finished edge without overwhelming your space. It’s the kind of door that whispers sophistication while keeping your fireplace safe, efficient, and undeniably better looking.
Features I Actually Love:
Welded Steel Construction
No flimsy corners here. This door is solid, dependable, and built to last—like the fireplace version of your favorite cast iron pan.
Minimal Frame, Maximum Style
With a profile that’s just three-quarters of an inch deep and wide, the Thin Line delivers a clean, nearly invisible edge. It’s the fireplace equivalent of flawless concealer—seamless and quietly transformative.
Textured Black Finish
Matte, elegant, and forgiving when it comes to soot smudges. It goes with every design style from rustic farmhouse to modern minimal.
Glass Options
Choose clear, grey, or bronze tempered glass—all at no extra cost and all safety-rated with a lifetime warranty. Because your fireplace deserves more than basic.
Door Styles (Also Included—No Extra Charge):
CV1: Cabinet doors with twin glass panels.
CV2 & FS2: Bi-fold designs for those who love a little drama with their flames.
Optional Spark Protection
Upgrade with a sliding mesh curtain—because while fire is lovely, rogue sparks in your rug are not.
Nadia’s Final Thoughts:
I’ve seen a lot of fireplace doors over the years, and the Thin Line has that rare ability to disappear into your space while still elevating the entire look. It’s smart, it’s solid, and it’s not trying to be flashy—it’s just flat-out functional and beautiful.
If you’re ready to give your fireplace that “just right” look, this is the upgrade that won’t steal the spotlight—but it’ll quietly transform your whole hearth.
Now if only it came with a remote control for keeping Nova off the hearth... but that’s another story.
Understanding Size Ranges
Fireplace doors are listed by size ranges. What does that mean? Simply put, the dimensions you measure for your fireplace opening must fall within the listed width and height range for the door to work. If the measurements don’t fit within those ranges, the door won’t be compatible.
Pro Tip for Overlap Fit Doors
When ordering standard masonry overlap fit doors, always choose the smaller frame size if two options will fit.
Send Me a Picture
To make the process even smoother, please send a picture of your fireplace with your order to [email protected]. A photo helps us ensure the best fit for your fireplace.
Need Help?
If you’re unsure about the measurements or selecting the right door, fill out the Contact Me form, and I’ll personally help you find the perfect fit for your fireplace. Let’s get your fireplace looking fabulous!
Free Shipping | Custom Made At Time Of Order 15-20 Business Days
If there’s one thing I can’t stand, it’s a beautiful fireplace hiding behind a drafty opening and an awkward metal frame that looks like it lost a bet with time. That’s where the Thin Line comes in—sleek, strong, and so snug it practically hugs your masonry like it was custom-built for it (because, well… it is).
Made from welded steel with the kind of craftsmanship that doesn’t flinch under heat or time, this inside-fit enclosure is minimal in all the right ways. The burnished, powder-coated textured black finish feels quietly elegant, like a little black dress for your hearth—tailored, timeless, and never trying too hard.
And let’s talk size. The Thin Line keeps it slim with a .75-inch frame—just enough to add that finished edge without overwhelming your space. It’s the kind of door that whispers sophistication while keeping your fireplace safe, efficient, and undeniably better looking.
Features I Actually Love:
Welded Steel Construction
No flimsy corners here. This door is solid, dependable, and built to last—like the fireplace version of your favorite cast iron pan.
Minimal Frame, Maximum Style
With a profile that’s just three-quarters of an inch deep and wide, the Thin Line delivers a clean, nearly invisible edge. It’s the fireplace equivalent of flawless concealer—seamless and quietly transformative.
Textured Black Finish
Matte, elegant, and forgiving when it comes to soot smudges. It goes with every design style from rustic farmhouse to modern minimal.
Glass Options
Choose clear, grey, or bronze tempered glass—all at no extra cost and all safety-rated with a lifetime warranty. Because your fireplace deserves more than basic.
Door Styles (Also Included—No Extra Charge):
CV1: Cabinet doors with twin glass panels.
CV2 & FS2: Bi-fold designs for those who love a little drama with their flames.
Optional Spark Protection
Upgrade with a sliding mesh curtain—because while fire is lovely, rogue sparks in your rug are not.
Nadia’s Final Thoughts:
I’ve seen a lot of fireplace doors over the years, and the Thin Line has that rare ability to disappear into your space while still elevating the entire look. It’s smart, it’s solid, and it’s not trying to be flashy—it’s just flat-out functional and beautiful.
If you’re ready to give your fireplace that “just right” look, this is the upgrade that won’t steal the spotlight—but it’ll quietly transform your whole hearth.
Now if only it came with a remote control for keeping Nova off the hearth... but that’s another story.
Understanding Size Ranges
Fireplace doors are listed by size ranges. What does that mean? Simply put, the dimensions you measure for your fireplace opening must fall within the listed width and height range for the door to work. If the measurements don’t fit within those ranges, the door won’t be compatible.
Pro Tip for Overlap Fit Doors
When ordering standard masonry overlap fit doors, always choose the smaller frame size if two options will fit.
Send Me a Picture
To make the process even smoother, please send a picture of your fireplace with your order to [email protected]. A photo helps us ensure the best fit for your fireplace.
Need Help?
If you’re unsure about the measurements or selecting the right door, fill out the Contact Me form, and I’ll personally help you find the perfect fit for your fireplace. Let’s get your fireplace looking fabulous!
Free Shipping | Custom Made At Time Of Order 15-20 Business Days
Important Reminder: This fireplace glass door is designed to be installed as a surface mount, overlapping the exterior of your fireplace opening. It’s crafted to fit a variety of fireplace sizes, providing a versatile and seamless installation.
Specifications:
| 🔧 Specs at a Glance | |
|---|---|
| Fit Type | Inside fit for masonry fireplaces only |
| Frame Size | ¾” wide x ¾” deep steel |
| Finish | Textured Black powder coat |
| Glass | ¼” tempered safety glass |
| Glass Tint Options | Clear, Grey, Bronze |
| Door Types | Bi-Fold (Tracked or Trackless), Cabinet-Style |
| Spark Protection | Optional sliding mesh curtain |
| Mounting Hardware | Included |
| Assembly | Some required (but not a weekend-ruiner) |
