Best Extra Wide Door Thresholds for Exterior and Commercial Doorways
The best extra wide door threshold depends on the doorway’s width, length, and sealing needs. For a 72-inch-long opening, consider the M-D 6-inch flat-profile model or Blulu’s 5 5/8-inch threshold with a wooden insert. The Randall model is the widest listed at 8 inches, while the Barzen strip is designed for low-profile access. Measure the opening and check the product’s exact dimensions before ordering; one listing has conflicting length information.
| Product | Listed Width | Best For |
|---|---|---|
| M-D Commercial Flat-Profile, 72 in | 6 in | Wide commercial openings |
| Blulu Aluminum Exterior Threshold | 5 5/8 in | Exterior draft sealing |
| Randall Corrugated Threshold | 8 in | Extra-wide, low-profile coverage |
| Barzen Aluminum Threshold Strip | 5 in | Low-profile doorway access |
| M-D Adjustable Aluminum and Hardwood | 4 9/16 in | Uneven door gaps |
M-D Commercial Flat-Profile Threshold, 6-Inch
This M-D Building Products threshold measures 6 inches wide and 72 inches long, making it a strong match for a long, broad doorway. Its aluminum construction is described as suited to heavy traffic and commercial use. The listing also identifies it as UL fire-rated and says it helps limit drafts and stabilize indoor temperatures.
Best for: Commercial entrances or replacement projects that need a wide, long flat-profile sill. Choose this if the 6-by-72-inch dimensions match your opening. Limitation: The fixed profile is not described as adjustable, so it may not seal an uneven gap as precisely as an adjustable threshold.
Blulu 72-Inch Aluminum Exterior Threshold
Blulu’s threshold is 72 inches long and 5 5/8 inches wide. It is made from aluminum and includes a wooden insert intended to close the gap beneath the threshold, improve insulation, and help prevent drafts. Its dimensions make it useful when a standard-width sill would leave part of the doorway uncovered.
Best for: Homeowners or property managers replacing a long exterior threshold and seeking a built-in gap-sealing insert. Limitation: The product information says to check door size before purchase; it does not specify an adjustable riser or a particular accessibility profile.
Randall 8-Inch Corrugated Aluminum Threshold
At 8 inches wide, this Randall Manufacturing threshold is the broadest option in this selection. The listing describes heavy-gauge 6063-T6 aluminum, a corrugated surface, pre-punched mounting holes, and included screws. Its listed height is one-half inch, which the product information describes as meeting ADA threshold requirements.
Best for: Buyers who need maximum width across a short opening; the listed length is 36 inches. Choose it if a sturdy, pre-punched strip is preferable to a longer threshold. Limitation: Its 36-inch length may not cover a wider door, so measure the opening before selecting it.
Barzen 5-Inch Low-Profile Threshold Strip
Barzen’s aluminum strip is listed as 5 inches wide and 1/4 inch high, with a non-skid surface and pre-drilled holes. The product name gives a 48-inch length, but the feature text says 72 inches. Confirm the actual length with the seller or product details before ordering.
Best for: Buyers prioritizing a low-profile threshold for easier passage, including wheelchair access. Its slim height distinguishes it from taller sill designs. Limitation: The conflicting length information makes it important to verify fit, and the listed width is less than the 6- and 8-inch options.
M-D Adjustable Aluminum And Hardwood Threshold
This M-D Building Products threshold combines aluminum with oak wood and measures 73 inches long by 4 9/16 inches wide. Its adjustable riser is designed to seal uneven or unusual gaps, with a stated height range from 1 1/8 to 1 3/8 inches. The listing says it helps block drafts, moisture, dust, and bugs.
Best for: A long residential doorway with an uneven gap that needs height adjustment. Choose this over a fixed flat strip when fine-tuning the seal matters more than getting the greatest width. Limitation: At 4 9/16 inches wide, it is narrower than the other selected models.
Buying Guide: How To Choose An Extra Wide Door Threshold
How wide and long should the threshold be?
Measure the sill area from one side of the jamb to the other, then check the product’s listed length and width separately. A wider threshold covers more depth across the doorway, while length determines whether it spans the opening. Do not assume “wide” means long: the 8-inch Randall model, for example, is listed at only 36 inches long.
Do you need a fixed or adjustable profile?
A flat-profile threshold is a straightforward choice when the sill is level and the dimensions match. An adjustable riser can be more useful when the gap beneath the door varies or the floor is uneven. Compare the listed height range with the actual gap, and check that the door can clear the threshold.
Which materials and features matter?
Aluminum appears across these options and is described as durable. Some designs add a wood insert or hardwood section for sealing, while others include pre-drilled holes and screws for installation. Consider whether the doorway needs draft protection, frequent-traffic durability, a low-profile surface, or a particular finish.
What should you check for accessibility?
Compare the threshold height and surface rather than relying on width alone. The Barzen listing specifies a 1/4-inch height and non-skid structure; the Randall listing specifies a 1/2-inch height and describes ADA compliance. Confirm applicable requirements for your project, since product descriptions do not replace site-specific measurements or code guidance.
Frequently Asked Questions
What is the widest threshold in this selection?
The Randall Manufacturing model is listed as 8 inches wide. It is also listed as 36 inches long, so it may not fit a full-width doorway.
Which option is best for a 72-inch opening?
The M-D flat-profile threshold is listed at 6 by 72 inches. Blulu is also 72 inches long and 5 5/8 inches wide. Confirm the opening dimensions before choosing either.
Which threshold is designed for uneven gaps?
The M-D aluminum and hardwood model has an adjustable riser with a stated range of 1 1/8 to 1 3/8 inches.
Does the Barzen threshold come in a 48-inch or 72-inch length?
The supplied product information conflicts: its name says 48 inches, while its feature text says 72 inches. Verify the current listing details before purchase.