Installerstore – Hard to Find Floor Register Sizes

Hard to Find Floor Register Sizes

Have a 3×10 floor/duct opening in your home, and can’t find ANYTHING in this size? You are not the only one! Odd size duct openings, such as 3×10, 4×8 and 8×10, are usually left out from most floor register lines. This blog is to help those who are lost on the endless search for odd register sizes, find their way (register).

Below are photos and links to the styles and colors available in odd register/hole sizes. Click the photos to go direct to the item on our site If you don’t like any of the styles, you could always go with a custom made floor grille. This way you can pick which design and finish/color fits your decor.

3×10 Floor Registers

White Steel 3×10 Floor Register
Also available in Brown
Polished Brass Wicker Register
Deflect-O White or Brown Plastic Floor Register 3×10
3×10 Wicker in Antique Brass
Oil Rubbed Bronze finish in a Wicker Design
Wicker Floor Register in Brushed Nickel Plating

4×8 Floor Registers

White or Brown 4×8 Steel Floor Register
Heavy Gauge Steel Floor Grille 4×8 (no damper)
Heavy Gauge Steel Floor Register 4×8 (with Damper)

8×10 Floor Registers

Unfinished Oak Floor Register 8×10
(also available in sizes 8×12 and 8×14)
Heavy Gauge Steel Floor Grille 8×10 (no damper)
Also available in a register (damper)
8x10 Decorative Floor Registers
Decorative Mission Style floor registers available in 8×10 size. Finishes shown from left to right: Antique Brass, Nickel, Oil Rubbed Bronze and Brass. Other finishes available include Copper and Flat Black.

Looking for an odd baseboard register or grille size? We have a full line of baseboard registers and grilles, including a 48″ baseboard register. This hard to find 48″ baseboard diffuser is also available in white and golden sand color.

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21 Responses to Installerstore – Hard to Find Floor Register Sizes

  1. Kathy Kwiek says:

    I need a baseboard register size 14″ wide x 9″ long

    • Good Morning Kathy. The sizes you have listed, are those for the actual faceplate you need or the ductwork/hole in the wall?
      Please let me know and I will find some options for you. -Katie

  2. Jessica says:

    How about a 3 1/2″ by 8″ floor register. That is the opening of the ductwork.

    • Good Afternoon! For that specific size, you would need to purchase a custom size. The custom sizes would not have a damper to control airflow (if you needed the damper, you could increase the opening size to a 4″ x 10″ and this is a standard size). The price for a custom 3.5″ x 8″ floor return is $39.57. There are many decorative designs and finishes available for this item (see link below). This item takes 5-8 weeks to ship from the manufacturer and it is considered special order/non-returnable. Here is a link to this item:

      Have a great day!

  3. Roberta Taylor says:

    I am looking for a 5 x 14 (actual vent opening) floor vent cover R. Taylor

  4. Stephen J Vardy says:

    The holes in the floor measure 2.5 x 15, we need 10 in total, what would you suggest ?

    • Good Afternoon! Thanks for your interest in our registers. Unfortunately manufacturers will make registers for even, whole numbers (for the length), so we do not have a stocked floor vent for a 2.25″ x 15″ hole in the floor. There are two recommendations for you. The least expensive/fastest option would be to purchase a 2.25″ x 14″ floor register, and make sure the overall faceplate would cover the extra 1″. For example, the 2.25″ x 14″ Contemporary registers are made for a 2.25″ x 14″ opening in the floor, but the overall faceplate would cover the extra (dimensions 3 1/2 x 15 1/4). The register may jiggle around (because the damper is smaller than opening), but you can use foam tape around the damper or put in a small wood hold to keep it in place. Here is a link to view all of the 2.25×14 floor registers available on our site:

      The other recommendation that I have is to purchase a custom floor return. This is completely customizable (finish, design, etc). This option would not be a floor return grille, meaning it wouldn’t have a damper to control airflow. To give you an idea, a 2.25″ x 15″ custom floor return would cost $47.53 each. This option takes 5-8 weeks to ship. To view more information on this custom option, view this link (please note the size you need will not be listed because of the custom sizing):

  5. Tara T says:

    I am trying to find a place the will make me a wall return air vent cover that is 31 1/2. Inches horizontally , and 15 1/2 inches vertically. Can you help. It just needs to be a plain white metal vent cover. I just need the face vent to cover the hole.

    • Good Afternoon. When ordering wall return grilles, you want to order by the actual opening/hole size in the wall (because manufacturers will make overall faceplates in different sizes). It sounds as if you have a 30″ x 14″ hole/opening size in the wall. Just to note, I know you said wall grille, and a standard wall grille will be quite thin (about 3/16″). If this is located in the Baseboard area (where the wall meets the floor), that has a faceplate thickness of about 1″, please let me know so I can provide this information to you.

      The white steel wall return grille that we currently stock, unfortunately has an overall faceplate size of 31 3/4″ x 15 3/4″. This may be too larger for your situation, but if you could use it, it would be the most economical option for you and would be able to ship right away (Here is a link to this item if you are interested: )

      Otherwise, if you need the overall faceplate to be exactly 31 1/2″ x 15 1/2″, you could special order a Shoemaker White Steel Return Air Grille 30×14 , which would have close overall faceplate sizes of 30 5/8″ x 15 5/8″. If you are interested in this item, please contact me at and I can provide you pricing/more information.

      Have a great day!

  6. David says:

    I’m looking for a 7×9 ac register. I’m not having very much luck. Any suggestions?

  7. Suzanne Wilson says:

    I’m looking to replace an floor furnace vent. The opening is 16.5″ x 28.5″. Any suggestions? Thanks!

  8. Pam says:

    I have 4 x 13.5 registers any ideas ?

  9. Juie says:

    I have an opening that is 16×61/2 inches. I want to be able to control airflow as well. Can you help me find a floor vent?
    Thank you,

  10. Jan Trahin says:

    Looking for 3.5×10 floor registers

  11. Julie Monroe says:

    I am trying to replace baseboard registers in my early 1980’s house. They are 24 3/4″ long. I can’t find anything. There are at least 10 of them in my house. Help?

  12. Liz says:

    I need a grille for a ductwork opening of 4×16.5, located directly under a (low profile) step.The ductwork is flush with the step (facing the house front door), so the grille would need to be 4 inches tall max, but it can be longer than 16.5 inches. At this time, the opening of the ductwork isn’t covered with anything but it’s not very visible since it’s a low step. Can you suggest something? Thanks in advance!

    • Hello Liz,
      Thank you for reaching out!
      We would be happy to assist you in finding an item that will work for your application.
      It sounds like it may be beneficial to view a photo of the area. Please send a photo and the dimensions to our primary email address,
      If we do not stock an item that will work, we also work with Steel Crest for custom decorative registers and return grilles. These are found here on our website:
      Please let us know if you have any further questions.
      Thank you!
      Have a great day!

  13. Scott Oldham says:

    I’m looking for a 16″x14″ floor register for my kitchen

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