Dayton 3G-OTH-74585 — Technical Specifications

Name: Dayton 3G-OTH-74585 29.75"H-W 4.5"L Aluminum Backdraft Dampr: For 30 in Fan, For 30 in Nominal Duct Dia, Single Panel (MPN 3HHL8). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2000 fpm; Mounting Position: Vertical.
Brand: Dayton

The Dayton 3HHL8 is a universal-mount backdraft damper designed for a 30-inch fan and 30-inch nominal duct diameter. It features a single-panel flat blade construction with aluminum material, supporting horizontal airflow and vertical mounting. The damper has a maximum air velocity of 2000 fpm.

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Technical Specifications

Parameter	Value
Type	For 30 in Nominal Duct Dia, Single Panel
Brand	DAYTON
Blade Type	Flat Blade
Airflow Direction	Horizontal
Mounting Position	Vertical
Maximum Air Velocity	2000 fpm
Manufacturer Part Number	3HHL8