Dayton 3G-OTH-74781 — Technical Specifications

Name: Dayton 3G-OTH-74781 47.75"H-W 4.5"L Aluminum Backdraft Dampr: For 48 in Fan, For 48 in Nominal Duct Dia, Single Panel (MPN 3HHN3). Key specifications — Airflow Direction: Vertical; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2250 fpm; Mounting Position: Horizontal.
Brand: Dayton

The Dayton 3HHN3 is a universal-mount backdraft damper designed for use with a 48-inch fan and 48-inch nominal duct diameter. It features a single-panel, flat blade construction with aluminum material, supporting vertical airflow direction and horizontal mounting. The damper has a maximum air velocity of 2250 fpm.

View Product & Quote

Technical Specifications

Parameter	Value
Type	For 48 in Nominal Duct Dia, Single Panel
Brand	DAYTON
Blade Type	Flat Blade
Airflow Direction	Vertical
Mounting Position	Horizontal
Maximum Air Velocity	2250 fpm
Manufacturer Part Number	3HHN3