Dayton 3G-OTH-75142 — Technical Specifications

Name: Dayton 3G-OTH-75142 41"H-W 4.5"L Aluminum Backdraft Damper: For 36 in Fan, Single Panel, 41 in H, 41 in W, 2 in D, Felt (MPN 4HX70). Key specifications — Airflow Direction: Vertical; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2250 fpm; Mounting Position: Horizontal.
Brand: Dayton

The Dayton 41"H-W 4.5"L Aluminum Backdraft Damper (SKU 4HX70) is a ceiling/roof-mount backdraft damper designed for a 36-inch fan. It features a single-panel flat blade design with vertical airflow direction and horizontal mounting position, constructed from aluminum with a 2-inch depth and felt seals. The damper supports a maximum air velocity of 2250 fpm and measures 41 inches in height and width.

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Technical Specifications

Parameter	Value
D	2 in
H	41 in
Type	Single Panel, 41 in W, Felt
Brand	DAYTON
Blade Type	Flat Blade
Airflow Direction	Vertical
Mounting Position	Horizontal
Maximum Air Velocity	2250 fpm
Manufacturer Part Number	4HX70