The best metal fireplace surround kit is one sized to cover the gap around your specific electric insert without blocking its frame. Compare the kit’s outer and inner dimensions with both the wall opening and fireplace before ordering. The Dreamflame 36-inch kit is best for a larger opening that needs a broad black frame, while its 33-inch kit suits a smaller insert. Masarflame offers an expanded frame, and Kentsky describes a powder-coated metal option. The Modern Ember kit is wood, not metal, but may suit buyers seeking a full mantel surround.
| Product | Material | Best suited for | Key measurement |
|---|---|---|---|
| Dreamflame 36-inch trim kit | Metal | Covering gaps around a larger insert | 44.55 inches wide by 32.1 inches high outside |
| Masarflame trim for 40-inch electric fireplace | Metal | Filling a larger opening around a smaller fireplace | 48.9 inches by 32.1 inches overall |
| Dreamflame 33-inch trim kit | Metal | Covering gaps around a smaller insert | 41.9 inches wide by 29.5 inches high outside |
| Kentsky 40-inch metal trim kit | Powder-coated metal | Buyers with the specified Kentsky fireplace model | 47 inches wide by 25.7 inches high overall |
| Modern Ember Everly surround | White oak wood | Buyers who want a mantel-style surround | 56-inch opening; 80 by 54 inches overall |
Dreamflame 36-Inch Metal Trim Kit

This Dreamflame trim kit is best for buyers who need a broad black frame to conceal gaps around an electric fireplace insert. Its listed outer dimensions are 44.55 inches wide by 32.1 inches high by 0.7 inch deep. The inner dimensions are 32.95 by 26.3 inches.
The kit consists of three sheet-metal panels that fit together and are secured with screws. Instructions and necessary parts are listed as included. That panel design may be useful where a custom stone or wood surround is not part of the plan.
- Best for: Framing an opening around a compatible insert when the listed dimensions match.
- Why it stands out: The inner and outer measurements are both provided, making it easier to compare the frame with the insert and wall opening.
- Check before ordering: The product name refers to a 36-inch insert, but the listed inner width is 32.95 inches. Confirm the actual insert and opening measurements rather than relying on the name alone.
Masarflame Trim for 40-Inch Fireplaces

The Masarflame metal trim is best for a fireplace installation where the wall opening is larger than the insert and an expanded frame is needed to cover the surrounding gap. Its stated overall dimensions are 48.9 by 32.1 inches. The listing says the frame allows 5.8 inches of expansion on each side of the fireplace.
This option is described as an expanded frame for a Masarflame insert fireplace. The listing also says it is suitable for holes no larger than its maximum dimensions and that the minimum suitable size depends on the fireplace itself.
- Best for: Buyers who need additional coverage at the sides of a smaller fireplace within a larger opening.
- Why it was selected: Its stated side expansion addresses a common surround problem: an insert that does not fill the existing opening.
- Check before ordering: The listing does not provide a complete inner-dimension range. Confirm the fireplace’s minimum and maximum fit with the seller before purchase.
Dreamflame 33-Inch Metal Trim Kit

This black metal trim kit is best for buyers with a smaller insert and a wall opening that needs a finished border. The listed outer size is 41.9 inches wide by 29.5 inches high by 0.7 inch deep. The inner size is 30.3 by 23.7 inches.
Like the larger Dreamflame option, this kit uses three sheet-metal panels assembled to fit together and secured with screws. The listing says necessary parts and instructions are included. Its stated dimensions help buyers compare the visible frame with the opening and insert before installation.
- Best for: Installations where the insert and opening measurements suit the smaller inner frame.
- Why it was selected: It offers a distinct smaller-size option with both inner and outer dimensions specified.
- Check before ordering: The product name refers to a 33-inch fireplace, while the listed inner width is 30.3 inches. Measure the fireplace body and follow the supplied instructions to verify fit.
Kentsky 40-Inch Powder-Coated Metal Trim

The Kentsky trim kit is best for buyers whose fireplace matches the Kentsky model dimensions specified in the listing. It is described as metal with a powder-coated finish. Its stated overall trim dimensions are 47 inches wide by 25.7 inches high by 0.7 inch deep.
The listing says the trim is designed for an electric fireplace measuring 40 inches wide by 27.5 inches high by 6.5 inches deep. Those stated figures do not align neatly with the listed trim height, so buyers should verify the exact model and fit dimensions before ordering.
- Best for: Owners confirming that their fireplace matches the listing’s stated Kentsky specifications.
- Why it was selected: It identifies a powder-coated metal construction and provides the trim’s overall dimensions.
- Check before ordering: The listed trim height is shorter than the stated fireplace height. Ask the seller to clarify fit and coverage for the specific model.
Modern Ember Everly Wood Surround Kit

This is not a metal fireplace surround kit. It is included as a material alternative for buyers who want a full mantel-style frame rather than a narrow metal trim panel. The Modern Ember Everly is made from white oak wood and has a listed 56-inch opening with an overall size of 80 by 54 inches.
The product is described as a modern picture-frame design with a mantel shelf. Instructions and standard mounting hardware are listed as included, and the listing says basic home installation tools are needed.
- Best for: Buyers seeking a substantial wood mantel surround with a clean-lined design.
- Why it was selected: It offers a different surround format for readers comparing metal gap-covering trim with a complete mantel feature.
- Check before ordering: It is wood, not metal, and its overall dimensions and opening differ substantially from the compact trim kits above.
Buying Guide: How to Choose a Metal Fireplace Surround Kit
What measurements should you take?
Measure the wall opening, the fireplace body or insert frame, and the space available around the unit. Compare these measurements with the kit’s outer dimensions, inner dimensions, and depth. The outer size indicates the overall area the trim can cover. The inner size indicates the opening inside the trim. Do not assume that a kit’s nominal fireplace size, such as 33 or 36 inches, is the same as its actual inner width.
Write measurements down in the same units used by the product listing. Check width and height separately, and note whether the opening is square or uneven. A trim kit can have adequate width but insufficient height, or the reverse. When a listing omits inner dimensions or leaves fit unclear, ask the seller before ordering.
How much gap does the frame need to cover?
Compare the fireplace’s visible face with the existing opening. A trim frame is useful when it can overlap the surrounding gap without covering parts of the fireplace that must remain visible or accessible. For example, the Masarflame listing describes 5.8 inches of expansion on each side, while the Dreamflame kits provide explicit inner and outer measurements. These details help indicate coverage, but they do not replace checking the actual installation.
For a large or uneven gap, determine whether a flat frame is enough or whether the opening needs additional finishing work. Product descriptions do not establish that a trim kit can correct structural problems, conceal every irregular opening, or replace installation requirements for a particular fireplace.
Which material and style suit the room?
Metal trim is a practical choice when the goal is a defined border around an electric insert. The products here use black metal or powder-coated metal, which can create a contrasting frame. Confirm the finish shown and described in the listing if color matching matters. A metal trim kit is different from a mantel: it frames the insert but does not necessarily provide a shelf or the visual mass of a full surround.
A wood mantel kit, such as the Modern Ember Everly, is a separate design choice. It has a large overall footprint and an opening specified for a larger fireplace area. Choose it only if a mantel surround is wanted and the room has space for its listed dimensions. Do not treat it as a metal trim substitute.
What should you verify about installation?
Check how the kit assembles and what hardware is included. The Dreamflame kits are described as three sheet-metal panels connected with screws, with instructions and necessary parts included. The Modern Ember wood surround lists instructions and standard mounting hardware. The supplied details for the other metal options are less specific, so confirm assembly steps and included components if those affect your project.
Read the fireplace manufacturer’s installation instructions as well as the trim instructions. Confirm that the trim does not obstruct the fireplace’s controls, vents, or required clearances. The product details provided here do not establish compatibility with every electric fireplace or installation arrangement.
How do the listed metal kits compare?
- For a larger black trim frame: Compare the Dreamflame 36-inch kit’s 44.55-by-32.1-inch outer dimensions with your opening.
- For a smaller insert: Compare the Dreamflame 33-inch kit’s 41.9-by-29.5-inch outside dimensions and 30.3-by-23.7-inch inner dimensions.
- For added side coverage: Consider the Masarflame frame if its stated 48.9-by-32.1-inch size and described side expansion suit the installation.
- For a specific Kentsky fireplace: Verify the model and resolve the height discrepancy between the trim and fireplace dimensions before buying.
These comparisons are based on the product details provided. They do not confirm fit for an unmeasured opening or an unlisted fireplace model. The most reliable selection is the one whose verified inner and outer measurements match the installation.
Frequently Asked Questions
How do I choose the right metal fireplace trim size?
Measure the wall opening and fireplace, then compare both with the trim kit’s inner and outer dimensions. Check width, height, and depth rather than relying only on a nominal size such as 33 or 36 inches.
Will a metal trim kit cover gaps around any electric fireplace?
No. Fit depends on the insert’s dimensions, the wall opening, and the kit’s measurements. Confirm compatibility with the specific fireplace and do not assume that a generic size guarantees a fit.
What is the difference between inner and outer trim dimensions?
Inner dimensions describe the opening inside the frame. Outer dimensions describe the trim’s total width and height. Both matter: the inner opening must suit the fireplace, while the outer frame must cover the surrounding gap.
Are all the products in this list metal?
No. Four options are described as metal trim kits. The Modern Ember Everly is a white oak wood mantel surround and is included only as a non-metal alternative.
Does a trim kit include installation hardware?
It depends on the product. The Dreamflame listings specify included parts and instructions. Check the individual listing for other products, and confirm what is supplied before starting installation.