At the baseboard (wall meets floor)
Set the backplate into the opening at the floor line — the square lower corners sit flush where wall meets floor — and secure it as the included brochure directs.
Will it fit?
Check the airflow, measure the opening behind the grille, then choose the placement. Have a tape measure handy.
01
The three checks
InteractiveNo email needed to check your fit.
Check 1 of 3Return or supply?
Return / Supply
Choose one answer to continue.
Returns are usually the larger grilles with no directional damper; when the system runs, they draw air in.
Check 2 of 3Measure the duct opening
14.00 × 6.00 in
Enter a width and a height in inches, each greater than 0 and no more than 40.
Check 3 of 3Placement and count
Choose where the opening sits to see your result.
Compatible · Baseboard
An exact 14″ × 6″ return at the baseboard.
Measured opening—
Set the backplate into the opening at the floor line — the square lower corners sit flush where wall meets floor — and secure it as the included brochure directs.
Quantity1
$36.35 each · One-time purchase — no subscription required. One per compatible return opening.
Compatible · Sidewall
An exact 14″ × 6″ return on the wall.
Measured opening—
Fit the top clip and the two bottom clips to the backplate, then set the backplate into the opening — the clips hold it tool-free.
Quantity1
$36.35 each · One-time purchase — no subscription required. One per compatible return opening.
Not an exact 14″ × 6″ · Manual review
Not an exact 14″ × 6″ opening.
Measured opening—
The current grille is designed for an exact 14″ × 6″ return opening, installed horizontally. Other sizes aren’t approved automatically.
Email a photo and your measurements so we can review your opening individually.
Ceiling returns aren’t supported. A friction-fit cover holding a loaded filter overhead is a drop risk we won’t take — wall openings only.
Supply vent · Not supported
That vent blows air out.
This is a supply vent — Impeccable Air filters returns only.
Returns only. Never install a filtered grille on a supply vent — supply openings blow conditioned air out and aren’t what this product is designed for.
Not sure yet · Ask us
Try the tissue test again.
Returns are usually the larger grilles with no directional damper; when the system runs, they draw air in.
Returns only. Never install a filtered grille on a supply vent — supply openings blow conditioned air out and aren’t what this product is designed for.
Ceiling return · Not supported
Wall openings only.
Measured opening—
Ceiling returns aren’t supported. A friction-fit cover holding a loaded filter overhead is a drop risk we won’t take — wall openings only.
02
Check 1 — Return or supply?
Fig. 02Return / Supply
With the HVAC fan running, hold a tissue near the vent. What happens?
- 01Pulled toward the ventIt’s a return — continue to Check 2.
- 02Blown away from the ventThis is a supply vent — Impeccable Air filters returns only.
- 03Not sureReturns are usually the larger grilles with no directional damper; when the system runs, they draw air in.
Safety
Returns only. Never install a filtered grille on a supply vent — supply openings blow conditioned air out and aren’t what this product is designed for.
03
Check 2 — Measure the duct opening
Fig. 0314.00 × 6.00 in
Remove your current grille. Measure the opening in the wall: width first, then height. Measure the opening itself, not the grille’s outer edges.
- 14″ × 6″ (exact)
- Compatible — continue to placement and count.
- Any other size
- Reviewed individually by email — never approved automatically.
- 6″ × 14″ (vertical)
- The grille installs horizontally; louver direction and corner design are orientation-specific. Reviewed individually.
- Ceiling
- Ceiling returns aren’t supported. A friction-fit cover holding a loaded filter overhead is a drop risk we won’t take — wall openings only.
04
Check 3 — Placement and count
Fig. 04Where does this opening sit?
Higher on the wall
Fit the top clip and the two bottom clips to the backplate, then set the backplate into the opening — the clips hold it tool-free.
Ceiling
Ceiling returns aren’t supported. A friction-fit cover holding a loaded filter overhead is a drop risk we won’t take — wall openings only.
How many compatible return openings did you find in total?
One per compatible return opening.
Count1 — 8
05
Outcomes
Table 01| What you found | Outcome | What happens next |
|---|---|---|
| Return · 14″ × 6″ · at the baseboard | Compatible · Baseboard | Set the backplate into the opening at the floor line — the square lower corners sit flush where wall meets floor — and secure it as the included brochure directs. Baseboard installation |
| Return · 14″ × 6″ · higher on the wall | Compatible · Sidewall | Fit the top clip and the two bottom clips to the backplate, then set the backplate into the opening — the clips hold it tool-free. Sidewall installation |
| Return · any other size | Manual review | The current grille is designed for an exact 14″ × 6″ return opening, installed horizontally. Other sizes aren’t approved automatically. Email a photo and your measurements so we can review your opening individually. Ceiling returns aren’t supported. A friction-fit cover holding a loaded filter overhead is a drop risk we won’t take — wall openings only. Email us |
| Return · on the ceiling | Not supported | Ceiling returns aren’t supported. A friction-fit cover holding a loaded filter overhead is a drop risk we won’t take — wall openings only. Support |
| Air blown away from the vent | Supply vent | This is a supply vent — Impeccable Air filters returns only. How it works |
| Not sure | Ask us | Returns are usually the larger grilles with no directional damper; when the system runs, they draw air in. Email us |
06
Still unsure
SupportThe current grille is designed for an exact 14″ × 6″ return opening. Any other size is reviewed individually — email a photo and your measurements. Wall openings only: no ceilings, no supply vents.
