Dayton 3G-OTH-74890 — Technical Specifications

Name: Dayton 3G-OTH-74890 29"H-W 4.5"L Aluminum Backdraft Damper: For 24 in Fan, Single Panel, 29 in H, 29 in W, 2 in D, Felt (MPN 4HX68). Key specifications — Airflow Direction: Vertical; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2250 fpm; Mounting Position: Horizontal.
Brand: Dayton

The Dayton 29"H-W 4.5"L Aluminum Backdraft Damper (SKU 4HX68) is a ceiling/roof-mount backdraft damper designed for use with a 24-inch fan. It features a single-panel flat blade design with vertical airflow direction and horizontal mounting position, supporting a maximum air velocity of 2250 fpm. The damper measures 29 inches in height, 29 inches in width, and 2 inches in depth, with a felt seal.

View Product & Quote

Technical Specifications

Parameter	Value
D	2 in
H	29 in
Type	Single Panel, 29 in W, Felt
Brand	DAYTON
Blade Type	Flat Blade
Airflow Direction	Vertical
Mounting Position	Horizontal
Maximum Air Velocity	2250 fpm
Manufacturer Part Number	4HX68