4" Deep Steel Acoustical Louver 7½" O.C. Blade Spacing

Narrow depth, acoustical louver with 45° stationary blades for noise attenuation.

Model:	FS-401-LF/HF
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 Insulation:	Arrow Sound Insulation
Screen Options:	½" 19 ga. Galvanized Steel Mesh
Finish:	Mill (or other)
Water Penetration:	< .02 oz/ft² at 787 FPM
Pressure Drop:	.11 in. wg. (intake), .12 in. wg. (exhaust)

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