Greenhouse Power Shutter No Cord, Automatic, 36" x 36" Aluminum Single Panel Sigma 250 high-tension springs automatically return the

high-tension springs automatically return the louvers to a secure

consistent environment for your crops

and eventual exhaustion

engineered to withstand the tests of time and nature

Smooth Performance: Employs nylon bushings and solid shafts for quiet and consistent louver travel

Greenhouse Power Shutter No Cord, Automatic, 36" x 36" Aluminum Single Panel Sigma 250 high-tension springs automatically return theRefine your greenhouses atmospheric control with these high capacity power shutters. Meticulously engineered to facilitate maximized air movement, these units ensure your plants thrive by providing consistent fresh air intake or exhaust. The double panel configuration is housed in a heavy duty extruded aluminum frame, featuring corners that are precision milled and welded for exceptional structural integrity. To protect your internal growing