Dayton 3G-OTH-74522 — Technical Specifications

Name: Dayton 3G-OTH-74522 19.8"H-W 4.5"L Alu Spring Bkdrft Dampr: For 20 in Fan, For 20 in Nominal Duct Dia, Single Panel (MPN 3HHL6). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2000 fpm; Mounting Position: Vertical.
Brand: Dayton

The Dayton 19.8"H-W 4.5"L Alu Spring Bkdrft Dampr (SKU 3HHL6) is a universal-mount backdraft damper designed for use with a 20-inch fan and 20-inch nominal duct diameter. It features a single-panel flat blade construction, supports horizontal airflow direction, and is intended for vertical mounting positions. The damper has a maximum air velocity of 2000 fpm.

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Technical Specifications

Parameter	Value
Type	For 20 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	3HHL6