POTTORFF Louver brochure-2026

NON-DRAINABLE LOUVERS

Non-drainable louvers offer value and economy for exhaust applications or intake conditions where protection against water filtration is not critical. Optional hidden mullions provide a continuous blade appearance.

INTAKE/EXHAUST

EFJ-430 EFK-430

EEI-430

EFE-430-HP

EFJ-245 EFJ-445 EFJ-645 EFK-445

EFJ-437-HP EFJ-637-HP

EFJ-437 EFK-437 EFK-637

EFY-245 EFY-445

BEGINNING POINT OF WATER PENETRATION RATINGS

AMCA CERT.*

BLADE ANGLE

BLADE STYLE

VARIES 64.5% 10.3 51.9% 8.3 45.8% 7.3 59.6% 9.6 55.5% 8.9 50.1% 8.1 56.3% 9.0 50.6% 8.1 59.6% 9.6 55.5% 8.9 50.1% 8.1 54.7% 8.8 30.8% 4.9 34.8% 5.6 FREE AREA (%) ( sq.ft. )

MODEL

DEPTH

EEI-430 EFE-430-HP EFJ-145 EFJ-245 EFJ-430 EFJ-437 EFJ-445 EFJ-637-HP

4" 4" 1" 2" 4" 4" 4" 6" 6" 4" 4" 4" 6" 2" 4"

30° 30° 45° 45° 30° 37.5° 45° 37.5° 45° 30° 37.5° 45° 37.5°

INTAKE – EXHAUST EXHAUST J-BLADE J-BLADE J-BLADE J-BLADE J-BLADE HIGH PERFORMANCE J

– –

– –

– –

– – – – –

349 942 1,002

2,896 6,911 9,619 6,853 6,317 8,226 8,101 9,619 6,853 6,317 8,916 3,531 4,649

0.03 0.20 0.16 0.09 0.10 0.12 0.13 0.16 0.09 0.10 0.13 0.34 0.42

772 781 915

WP/AP WP/AP

– – –

EFJ-645 EFK-430 EFK-437 EFK-445 EFK-637 EFY-245 EFY-445

J-BLADE K-BLADE K-BLADE K-BLADE K-BLADE

1,000 1,002 772 781 1,019

WP/AP WP/AP

– – –

45° 45°

INVERTED Y INVERTED Y

679 834

AP Air Performance

WP Water Penetration

*AMCA CERT LEGEND:

4

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