4" Deep Steel Acoustical Louver 45° Blades High/Low Frequency

Model:	AFS401HF / AFS401LF
Filter:	AFS401HF,AFS401LF
Minimum Panel Size:	12" x 18"
Maximum Panel Size:	60" x 96"
Frame Depth:	4" Deep
Frame Type:	Inverted Formed Channel
Frame Material:	16 ga. Galvanized Steel
Blade Material:	Exterior: 18 ga. Galvanized Steel Interior: 22 ga. Perforated Steel
Blade Orientation:	Horizontal
Blade Type:	Acoustical Airfoil
Blade Spacing:	7 ½" On Center Approximate
Blade Insulation:	Sound Insulation
Screen Options:	½" 19 ga. Galvanized Steel Mesh
Finish:	Mill
Water Penetration:	< .02 oz/ft² at 787 fpm
Pressure Drop:	.11 in. w.g. (Intake), .12 in. w.g. (Exhaust)

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