I used it very little. It's super bright and was too much for my needs.It attaches from inside, under the bulb socket. To reattach - remove the three Phillip head screws that hold in the bulb socket in, then insert the four Phillip head screws through the lamp housing and screw them into the mounting bracket with the plastic insulator inbetween. Resecure the bulb socket with the three screws previously removed.
Slide the power unit onto the mounting bracket, center and secure by tightening the two Phillip head screws. All you'll need is a good Phillips head screwdriver (not included) Parcels will be insured. The item "630W Double Lamp Ceramic Metal Halide Grow Light System Kits 120VAC Extra Bulbs" is in sale since Monday, January 4, 2021. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Hydroponics\Grow Lighting & Accessories\Grow Light Kits". The seller is "pcfarming" and is located in Phelan, California.
This item can be shipped to United States.