Table Saw Flange Sizes: 12" vs 14" and What They Fit
By Infinity Cutting Tools | Premium Woodworking Tools ... | Published: 2026-10-31
Category: Buying Guides
Compare 12-inch and 14-inch table saw flanges for dust collection. Learn how to measure your saw's opening and choose the right flange for your setup.
Quick answer
Choose the Infinity Tools 12" Table Saw Flange for most contractor and compact hybrid saws with a smaller underside opening, and the 14" Table Saw Flange for larger cabinet saws where the flange can span the dust chute. Measure your saw's opening first; both flanges fit a 4" hose and may need a plywood or hardboard adapter plate.
Why the flange size matters more than the hose size
Both flanges accept a 4" hose, so hose diameter alone won't tell you which one fits. The deciding factor is the size of the opening under your table saw and how much surface area the flange needs to cover to catch dust. A flange that is too small leaves gaps around the chute; one that is too large may not sit flush or may interfere with the saw's internal components.
The 14" flange measures 14-1/8" square, while the 12" flange measures 12-1/4" square. That roughly 2-inch difference in width and depth can be the difference between a snug fit and a loose one. Measure the recess or opening in your saw's base, not the outer cabinet dimensions.
When an adapter plate is the right call
Infinity Tools notes that you may need to fashion an adapter plate out of plywood or hardboard with a cutout sized to match the recess in the flange fitting. This is common when your saw's opening is not square or when the flange is larger than the opening it needs to cover. An adapter plate lets you use the larger 14" flange on a saw with a smaller opening, or the 12" flange on a saw with an irregular opening, without modifying the saw itself.
Plan for the adapter plate as part of the installation, not as a failure. It adds a step but gives you a custom fit that can improve dust capture and reduce air leaks.
What about dado blade flanges?
The term "dado blade flange" sometimes refers to the arbor flange that holds a stacked dado set, which is a different part from the dust-collection flanges discussed here. The Infinity Tools flanges are designed for dust collection under the table saw, not for mounting blades. If you are looking for an arbor flange for a dado set, check your saw's manual for the correct arbor size and flange type; the 12" and 14" sizes here refer to the dust flange dimensions, not blade capacity.
Decision rules for choosing a table saw flange
- Measure the opening, not the cabinet: Use a tape measure to find the width and depth of the dust opening or recess under your table saw. If the opening is roughly 12 inches or less, start with the 12" flange. If it is closer to 14 inches, the 14" flange is likely the better match. Write down the measurement and compare it to the flange dimensions: 12-1/4" square and 14-1/8" square.
- Check for obstructions: Look under the saw for braces, trunnions, or motor covers that might prevent a larger flange from sitting flat. A 14" flange needs clear space around the opening; if space is tight, the 12" flange may fit without modification.
- Plan for an adapter plate if the fit is loose: If the flange is smaller than the opening, you can build an adapter plate from plywood or hardboard with a cutout that matches the flange recess. This is also useful if the opening is not square. Cut the plate to cover the opening, then cut the center to match the flange. Test-fit the plate and flange before securing anything; small adjustments are easier before final assembly.
Product facts
- Infinity Tools 14" Table Saw Flange: 14-1/8" square, fits a 4" hose, may require a plywood or hardboard adapter plate. The larger square covers more area under big cabinet saws, but the adapter requirement means you should check your opening before buying.
Infinity Tools 14" Table Saw Flange - Infinity Tools 12" Table Saw Flange: 12-1/4" square, fits a 4" hose, may require a plywood or hardboard adapter plate. A smaller footprint suits compact saws where space is tight, and the adapter note means you can still fit it to an irregular opening.
Infinity Tools 12" Table Saw Flange
Who should choose which flange
Best for
- Woodworkers with a contractor or hybrid table saw who need a compact dust flange
- Anyone willing to make a simple adapter plate for a custom fit
Not for
- Saws with an opening larger than 14-1/8" square, where neither flange will cover the full area
- Users looking for an arbor flange for a dado blade set; this is a dust-collection accessory
