01Check your returns
Confirm these for every opening in this order.
How to tell
With the HVAC fan running, hold a tissue near the grille. A return pulls it inward; a supply blows it away.

Choose either or both grille styles below.
What to measure
Remove the existing grille and measure the bare duct opening. Measure width first, then height. Do not use the outside dimensions of the grille.

Three quick checks, then you’re ready to add your grilles.
Keep your primary HVAC filter in place. Confirm compatibility with your HVAC system before adding filters.
02Build your order
Count compatible returns, not rooms.
Baseboard grille
Where the wall meets the floor. Secures with screws.
$36.35 with first filter pad
Sidewall grille
On the wall. Installs with friction-fit clips.
$36.35 with first filter pad
Extra filter pads
Optional. A first pad already comes with every grille.
$5.00 each
Already have your grilles? Shop replacement filters →