STEP 1:

- Measure your duct opening, not the register or grille.

- Measure left to right for length (L) and top to bottom for width (w).

STEP 2:

- If the existing register is screwed to the wall, use a screwdriver to remove the screws that hold

the register in place.

STEP 3:

- Use supplied screws to install your SMI Vents grille.

(Philips head screwdriver required)