Dayton 3G-OTH-74721 — Technical Specifications

Name: Dayton 3G-OTH-74721 41.75"H-W 4.5"L Aluminum Backdraft Dampr: For 42 in Fan, For 42 in Nominal Duct Dia, Single Panel (MPN 6WRK7). Key specifications — Airflow Direction: Vertical; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2000 fpm; Mounting Position: Vertical.
Brand: Dayton

The Dayton 6WRK7 is a universal-mount backdraft damper designed for use with a 42-inch fan and 42-inch nominal duct diameter. It features a single-panel, flat blade construction with a vertical airflow direction and vertical mounting position, supporting a maximum air velocity of 2000 fpm. This aluminum damper measures 41.75 inches in height and width with a 4.5-inch length.

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Technical Specifications

Parameter	Value
Type	For 42 in Nominal Duct Dia, Single Panel
Brand	DAYTON
Blade Type	Flat Blade
Airflow Direction	Vertical
Mounting Position	Vertical
Maximum Air Velocity	2000 fpm
Manufacturer Part Number	6WRK7