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Hearthfire Masonry Fireplace Door With Grate Heater

Hearthfire Masonry Fireplace Door with Fireplace Grate Heater

This is an overlap fit door for masonry fireplaces.



Product Code: 3425

Overall Dimension: 34-1/8" x 25"

Short description:
Fireplace Door
  • Owner's Manual: HearthFire Masonry Fireplace Door
  • Fireplace Type: Masonry
  • Door Fit: Overlap
  • Door Type: Bi-Fold Doors | Cabinet (Twin) Doors
  • Door Material: 3" Wide x 1 1/2" Deep Steel Frame
  • Finish Colors: Flat Black | Satin Nickel
  • Glass: 1/4" Tempered Safety Glass
  • Glass Tint: Clear
  • Ceramic Glass: N/A
  • Mesh Protection: Pre-Installed Mesh Curtain
  • Damper: Built In Top and Bottom Filigree
  • Airtight Option: N/A
  • Assembly: Minimal Assembly Required
  • Mounting: Hardware Included
Wood Burning Grate Heater
  • Owner's Manual: Grate Heater
  • Grate Heater Material: 11 Gauge Steel
  • Color: Black
  • Dimensions: 20 Inch W x 18.5 Inch D | 22 Inch W x 21.5 Inch D | 24 Inch W x 23.5 Inch D
  • Front Rail Height: 1 3/8 Inches
  • BTUs Per Hour: 40,000
  • CFMs: 90/125
  • Fuel Compatibility: Wood
  • Blower Speed: Variable
  • Fan Box Mounting: Left | Right
  • Thermostat: On/Off Fan Control
  • Standard Riser Bar Cover: Included

The Hearthfire Masonry Fireplace Door with wood burning fireplace heat exchanger is an investment that will last a lifetime! No chimney relining is required with this product, which is a huge savings to the average homeowner! This original product from Fireplace Doors Online has a flat black finish and is designed to be an overlap fit for masonry fireplaces. Your choice of bi-fold or cabinet style doors feature clear tempered safety glass. A pre-installed mesh curtain will protect your loved ones and furnishings safe from sparks. The dampers above and below the grate heater fireplace door promote optimal air control, help reduce down drafts, and prevent smoke from entering your living space.

The fireplace grate heat exchanger is made from heavy duty steel and comes in three different sizes to accommodate your needs. It delivers a generous amount of heat (40,000 BTUs) while maintaining its energy efficient qualities! A slim front rail height allows for easy installation into your masonry fireplace. 

  • Install on a masonry fireplace only - cannot be used on any vent-free/ventless fireplace!
  • Free shipping; please allow 4 weeks for production and transit time for this made to order product
  • 5 year limited warranty on frame and workmanship; 1 year limited warranty on tempered glass and electronics
  • USA-made grate heater is perfect for zone heating
  • 11 gauge steel grate heater produces 40,000 BTUs per hour
  • Variable blower speed produces 90/125 CFMs
  • On/off fan control; box can be mounted on left or right
  • Steel door frame is 3 inches wide and 1 1/2 inches deep
  • Overlap fit door comes in flat black or satin nickel finish
  • Bi-fold or cabinet style doors are equipped with 1/4 inch thick clear tempered glass
  • Includes pre-installed mesh curtain, riser bar, and mounting hardware for easy installation
  • Built-in dampers are hidden behind top and bottom filigrees
  • See specs tab for owner's manuals and more product details

  • The Hearthfire masonry fireplace door with grate heater ships for free!
  • Please allow 4 weeks for production and shipping unless otherwise specified.
  • In order to offer the best shipping method for our customers, certain fireplace doors are able to ship via transit carrier, such as UPS or FedEx. Heavier and larger doors will be shipped LTL freight.
  • In the event of LTL freight shipping:
    • Upon arrival, please inspect all freight shipments carefully. Note any damages or missing accessories on the delivery receipt.
    • In the event of concealed damage, freight customers MUST add "Pending Inspection" in addition to their signature on the delivery receipt. Failure to do so will void recovery for undiscovered/concealed damage.
Limitations and restrictions on our standard shipping policy regarding LARGER and IRREGULAR-SHAPED items are as follows:
  • Freight shipping is restricted to certain types of standard business addresses or to the motor freight carrier's normal delivery terminal for Customer pick-up at the terminal. A business out of the home is considered to be a residential address and may be subject to lift gate and/or curbside charges. Public schools, fire stations, farms and churches are also considered to be residential addresses. Deliveries to residential addresses are only made weekdays, generally between 8 AM and 5 PM. Deliveries to businesses or carrier terminals may fall outside this window, based on carrier time tables, queue, or other types of discretion. For residential deliveries: the assigned trucking company will contact the residence 24 hours prior to the date of delivery to confirm that someone is available to sign for the product.
  • Freight shipping to the following locations is UNAVAILABLEUnited States military bases, Hawaii, Alaska, Mexico and Canada.
  • Freight charges for the following states are quoted on a case-by-case basis, regardless of the address: Nebraska, North Dakota, South Dakota, Wyoming, Montana and Idaho. This is due to the lack of service available and delivery fees applicable to these areas. Please contact one of our sales representatives for a special shipping quote that accurately reflects this upcharge. "Free Shipping" may not cover all fees and upcharges. A sales representative will contact you prior to shipment, should any additional delivery fees apply.
  • An additional upcharge may be incurred for shipping to addresses within: Long Island including the Five Boroughs of New York, Northern New England including Nantucket and Martha's Vineyard, and other restricted or limited access areas. This is due to the transportation surcharges and/or delivery fees applicable to these areas. Please contact one of our sales representatives for a special shipping quote that accurately reflects this upcharge. "Free Shipping" may not cover all fees and upcharges. A sales representative will contact you prior to shipment, should any additional delivery fees apply.

Manufacturer's Warranty:

  • Warranty applies only to the original purchaser.
  • Warranty is void if damages occur due to improper installation/operation.


  • 5 year limited warranty on workmanship
  • 1 year warranty on clear tempered safety glass


  • Five year limited warranty on metal frame and construction
  • One year limited warranty on electronics (switches, motor, cord)\

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Since the motor is mounted behind the fireplace doors, it appears the motor would be damaged by excessive heat. The grate heater I'm replacing has the motor mounted in front of the doors where it stays cool.

Asked by Charles Roberts | 02-03-2019, 06:11 PM | 1 answer(s)
Last updated on September 3rd 2019.
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