Light traps are highly recommended in order to reduce light leaks in a light deprivation greenhouse. When used in conjunction with all fan openings, light traps block unwanted light without affecting the ventilation in the greenhouse. Keep in mind that all light traps should be the same size of the fan they are used with.
All 40” light traps ship unassembled to reduce freight costs but instructions for assembly are included. Each provides premium blackout without sacrificing all-important ventilation.