Greenhouse Power Shutter With Cord, Automatic, 48" x 48" Aluminum Single Panel Shutter Fan while high-tension springs ensure the

while high-tension springs ensure the panel closes tightly once power is cut

By combining panels and changing the rotation angle of their hinges

With a shutter fan

With the same durable aluminum frame and twin-wall polycarbonate glazing used across the Sigma line

For smooth and quiet operation

Greenhouse Power Shutter With Cord, Automatic, 48" x 48" Aluminum Single Panel Shutter Fan while high-tension springs ensure theMaintain the ideal growing climate with the professional grade aluminum intake power shutters. These shutters are purposefully built to optimize air movement, whether used as a fresh air inlet or for free air exhaust. The 48" x 48" model features a double panel design for maximum coverage and is constructed with a robust extruded aluminum frame. To ensure long lasting structural integrity, the corners are precision milled and welded, providing