Plastic Duct Grille 4 - White, Wall-Mount Grille for 4" Duct Fan lamps Universal BNC connector makes this

Universal BNC connector makes this the perfect replacement electrode

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RAW CalMag

Hanging hardware kit

Plastic Duct Grille 4 - White, Wall-Mount Grille for 4" Duct Fan lamps Universal BNC connector makes thisDesigned to be wall mounted and connected to ducting to supply exhaust air. Durable flame retardant polypropylene construction that can be painted. Features an internal manual damper which can be adjusted to open or close. Includes all screws and hardware to easily mount to a cabinet or wall. Ducting Size: 4 Dimensions: 7. 25 x 7. 25 x 2. 5 Material: PVC thermoplastic PRODUCT DESCRIPTION This duct grille was designed to be wall mounted and connected