Plastic Duct Grille 4 - White, Wall-Mount Grille for 4" Duct Fan commercial-lighting-fixtures This is an affordable greenhouse

This is an affordable greenhouse with extra height and double covers for the ambitious

3') cable for direct soil measurement

1 in inlet and outlet

Protect your plantings with Safe-Grow Greenhouses

the HydroGEN CO2 monitor uses indicator lights to show approximate CO2 levels

Plastic Duct Grille 4 - White, Wall-Mount Grille for 4" Duct Fan commercial-lighting-fixtures This is an affordable greenhouseDesigned 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