| Nominal Height* |
18" |
| Nominal Width* |
28" |
| Nominal Depth* |
1" |
| MERV |
8 |
| Avg. Atmospheric Efficiency (%) |
20 to 25 |
| Air Flow Velocity (FPM) |
375/500 |
| Initial Operating Resistance (W.G) |
0.22/0.40 |
| Final Operating Resistance (W.G.) |
1.0 |
| Max. Temp. (F) |
150 |
| Pleats per Linear Feet |
12 |
| UL Listing Class |
2 (R13458) |
*The industry standard specification on all standard sized filters runs from .25" to .5" shorter than its named size. IPI can custom size pleated filters to your exact requirements.