Diffuser Grille Sizing: linear_slot_1in
Supply diffuser and return grille performance data — CFM range, throw distance to 50 fpm, NC ratings, face velocity, and static pressure drop by diffuser type and neck size
| diffuser type | neck size in | NC rating (NC) | cfm max (cfm) | cfm min (cfm) | face velocity fpm (fpm) | notes | static pressure drop inwg (inWG) | throw 50fpm ft (ft) |
|---|---|---|---|---|---|---|---|---|
| linear_slot_1in | 2ft | 22 | 90 | 40 | 400 | 1-in wide linear slot diffuser 2-ft active length; aspirating type; ceiling or high sidewall mount; coanda effect requires ceiling proximity | 0.02 | 6 |
| linear_slot_1in | 4ft | 25 | 180 | 80 | 400 | 4-ft linear slot 1-in wide | 0.03 | 8 |
| linear_slot_1in | 6ft | 27 | 270 | 120 | 420 | 6-ft linear slot 1-in wide | 0.04 | 10 |
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