The cover isn't required, but it doesn't prevent light passing through and protects the LEDs. In perfect working order and probably only used for around 2 months to start of plants for my allotment.Any questions please get in touch. The item "LED Grow Light Invisible Sun ISH288 3500k" is in sale since Sunday, November 22, 2020. This item is in the category "Garden & Patio\Hydroponics\Grow Lighting & Accessories\Grow Light Kits". The seller is "djmilner" and is located in Danbury. This item can be shipped to United Kingdom.