FormExtender Pro Kit
FormExtender Pro Kit
FormExtender Pro Kit
FormExtender Pro Kit
FormExtender Pro Kit
FormExtender Pro Kit
FormExtender Pro Kit

FormExtender Pro Kit

FormExtender Pro Kit

$242.00
$242.00
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Concrete FormExtenders - The Faster Way to Form

Skip the saw and set forms in seconds. FormExtenders eliminate cutting, reduce waste, fill gaps, and solve layout challenges on every job. They slide over standard 2x4lumber.

No Cutting, No WasteSkip the saw and use every inch of your lumber with clean, gap-free connections.
Set Forms in SecondsSlide on, secure, and you're ready to pour - no extra setup time.
Handles the Tricky SpotsWork around obstacles and connect straight boards to flex forms with ease.
Built to LastHeavy-duty galvanized steel construction delivers job-after-job reliability and strong ROI.
Snaps Onto Standard 2x4sDesigned to fit standard 2x4 lumber, no special boards or extra cutting required.
Free Shipping $249+
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Description

Work smarter on every pour. Built from heavy-duty galvanized steel for concrete professionals, FormExtenders fit over 2x4 lumber. They eliminate cutting, reduce waste, and solve layout challenges on every job. 

Product highlights:

  • Stop Cutting Boards: Fill every gap and void cleanly without picking up a saw. Just lay out your form boards and let FormExtender fill every gap. The result is clean connections without using a saw.
  • Form Around Obstacles: The 18" Gap Form allows you to form around sprinkler heads, posts, pavers, and plastic edging without having to move them.
  • Equipment Access Made Easy: Leave an opening for wheelbarrows and mixers, then close it with the 3ft extender to finish your pour.
  • Connect Straight to Curved: Transition from straight form boards to curved flex boards for cleaner edges and no additional bracing.
  • Stop Wasting Lumber: Use every inch of every board. Eliminate your scrap pile and cut material costs on every job site.
  • Fast Setup: Slide on, secure, and you're ready to pour in seconds
  • Built to Last: Heavy-duty galvanized steel construction delivers job-after-job reliability and strong ROI

Pro Kit includes 10 Form Extenders:

  • (3) 6 in. Extender
  • (3) 12 in. Extender
  • (1) 18 in. Extender
  • (1) 24 in. Extender
  • (1) 36 in. Extender
  • (1) 18 in. Extender w/ Gap
Orders process within 1–2 business days. Free shipping on orders over $249. 30-day return window on eligible items — 10% restocking fee applies.
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Features

Built For The Job

No More Cutting. No More Waste.

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No More Cutting. No More Waste.

FormExtenders are the right tool for any concrete forming situation. Just slide them directly over standard 2x4 lumber to fill gaps cleanly. No cuts, no scrap, no rework. Keep your crew moving and your lumber pile intact across every construction project.

Work Around What's Already There

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Work Around What's Already There

Sprinkler heads, deck posts, plastic edging, and pavers don't have to be a problem anymore. The 18" Gap Form lets you build your formwork system right around fixed obstacles without digging, removing, or relocating anything. Set your forms, pour your concrete, and move on.

Built to Last & Reuse

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Built to Last & Reuse

Unlike snap ties, rebar cutters, and other single-use or wear-prone concrete accessories, Form Extenders are built for long-term efficiency. Slide them out after the pour, clean them off, and they're set for the next concrete work.

Common Questions

Frequently Asked Questions

What sizes are included in the Pro Kit?

The Pro Kit includes 10 Form Extenders: (3) 6 in., (3) 12 in., (1) 18 in., (1) 24 in., (1) 36 in., and (1) 18 in. Gap Form. That range handles gaps of almost any size on standard residential flatwork, from a few inches up to three feet.

What lumber sizes do FormExtenders fit?

FormExtenders are designed to fit over standard 2x4 lumber, the most common form board size used in residential and commercial flatwork. There's no need for special boards or custom cuts. The extender slides onto the boards you already run.

How do I remove FormExtenders after the pour?

Simply slide them out once the concrete has set. No tools required. They're reusable immediately and ready for the next job, built for repeated use across every construction project you take on.

Can I use Form Extenders with curved flex forms?

Yes. FormExtenders create a seamless transition between straight boards and curved flex boards, giving you clean, consistent edges even where your layout changes direction.

What concrete projects are FormExtenders good for?

FormExtenders work for flatwork concrete projects like patios, sidewalks, driveways, garage slabs, and hardscape borders. Because they fit standard 2x4 form boards, they drop into both residential and commercial forming without changing your setup.

How do Form Extenders save money over time?

By eliminating the need to cut boards to fit, you use every inch of your lumber and reduce waste on every job. Combined with the time saved on layout and the ability to reuse the extenders indefinitely, the Pro Kit delivers strong ROI over just a few jobs.

Where can you buy FormExtender kits in person?

FormExtender kits are available in person at Home Depot through participating dealers. Availability varies by location, so check the dealers page to find a stocking dealer near you. You can also order the Pro Kit directly on this site with free shipping on orders over $249.