4x10 and 4x12 Flush Floor Vents

4x10 and 4x12 are the two sizes most people need. Together they made up roughly four out of five of the LVP and LVT vents ordered from us over the last two years. Each vent is made from a spare plank of your own floor, so the color, grain and bevel match what's around it. Pick your size and send us a leftover plank.

Order a 4x10 ventOrder a 4x12 vent

4x10 or 4x12: which one do you need?

4x10

4 x 10 inches

The size we're asked for most. Measure the duct opening in the floor, not the old register, and use this size if the opening is about 4 inches by 10 inches.

Most ordered

4x12

4 x 12 inches

The second most ordered size. Same rule: measure the opening itself, and choose this one if it comes out to about 4 by 12 inches.

Second most ordered

Somewhere in between?

Other sizes

If your opening doesn't match either size, contact us with the exact measurements before you order. We also build 2x10, 2x12, 2x14, 4x14, 6x10, 6x12 and 6x14.

How it works

  1. Measure the openingWidth and length of the hole in the floor, in inches. Skip the old register's outer frame.
  2. Send a leftover plankA leftover plank of LVP or LVT, at least 5 mm thick. An attached pad counts toward the 5 mm.
  3. Drop it inWe build the vent from your plank. It sits level with the floor, with no raised frame.

Built to be walked on

  • Metal-reinforced backer
  • Tested to 1,200 lbs on a 2-inch puck
  • Sits flush with the floor
  • Flooring 5 mm or thicker, pad included

Have hardwood instead?

Hardwood vents are quoted one job at a time, so there is no listed price. Tell us the brand, thickness and sizes on the hardwood vent quote page.

4x10 and 4x12 vent FAQ

Are 4x10 and 4x12 the most common vent sizes?

For LVP and LVT floors, yes. About 44% of the LVP and LVT vents ordered from us between October 2024 and October 2026 were 4x10, and about 37% were 4x12.

How do I know whether I need a 4x10 or a 4x12?

Remove the old register and measure the duct opening in the floor, width by length. Order the size that matches the opening. If it falls between sizes, contact us with the exact measurements before ordering.

How thick does my flooring need to be?

At least 5 mm. If your plank has an attached pad, the pad counts toward that 5 mm.

How strong is the vent?

The vent face is mounted on a metal-reinforced backer, and our vents are tested to 1,200 lbs on a 2-inch puck.

Can I get a matching cold air return too?

Yes. Returns come in 6x20, 6x24, 6x30, 6x36, 8x20, 8x24, 8x30 and 8x36 inches, built from your flooring the same way.

Do you make these for hardwood floors?

Hardwood vents are quote-only and have no price listed. Use the hardwood vent quote page and include the sizes you need.

Learn more