Do you have a register between two baseboards?
If you have a situation in which your duct opening is on the wall, but all the way down next to the floor with a baseboard to the left and a baseboard to the right, then you have the typical baseboard register situation. It would be nice to have a standard width gap like 13 or 15 inches between the baseboards, but sometimes that isn't possible. We are well suited to provide both the standard dimension and also the oddball dimension grille. Check out the various styles in the menu at the left!
Ultimately though, you'll want to call and talk to us since this type of register can be very confusing and of course it is important to get things configured right.