The overall dimension of the register is 3-7/8” x 15-1/4” which is ideal for big spaces in your rooms. You cannot do without this accessory if you want comfortable rooms in your spaces. The air flow can be increased with these registers and you can make your interiors more suave. The design of the register is the highlight where a floral pattern makes for the whole register. The smart design keeps the rodents at bay and keeps the air flow going.