Return-air distribution
Return-Air Grille Layout Planner
Lay out return-air grille positions evenly across a rectangular zone while retaining edge conditions and actual spacing.
Layout inputs
Return-air location and grille selection depend on airflow strategy, room use, acoustics and product performance. This tool is geometric.
Enter zone dimensions and target spacing.
Return-air layout result
Planned grilles
—
—
—X positions
—Y positions
—Actual X spacing
—Actual Y spacing
—
Return-air layout method
The planner finds the whole-number count that fits within each usable dimension, then spreads the positions evenly.
Axis count = floor(usable ÷ target spacing) + 1
Actual spacing = usable ÷ (count − 1)
Actual spacing = usable ÷ (count − 1)
Why this differs from simply multiplying by a spacing
A target interval may not divide a room exactly. Reporting actual spacing prevents the final grid from becoming an unnoticed irregular layout.
Limitations
No airflow, grille free-area, pressure drop or furniture coordination is calculated.
Frequently Asked Questions
Can each axis use a different spacing?
Yes.
Can I use millimetres?
Yes.