Barrina 4FT LED Shop Lights - 45W 4800LM Super Bright White 6500K with Frosted Cover & ON/Off Switch - Linkable LED Fixture for Garage, Workshop, Ceiling, Basement - Perfect for Home Improvement and Industrial Lighting (2-Pack)

These are great lights - very bright! I ran 6 of them in my 450 sq ft garage shop, and that was perfect. At 4800 lm each, these 6 lights give me a total of 28,800 lm in my garage shop. I wanted a foot candle brightness of 50 foot candle everywhere in the shop. To calculate the total lumens required to get the brightness you multiply your square footage by the number of foot candles of brightness desired. In my case, 450 x 50 gave me 22,500 lm which 5 of these lights would provide. Using all 6 lights probably gives me about 60 foot candles brightness, which is excellent for a shop like this.Each lamp comes with several mount accessories, including metal clips that direct mount to your ceiling. You’ll use 2 clips per lamp, and I placed my clips about 6” in from either end of 47” lamps. One screw holds the metal clips securely in place in a sheetrock ceiling using the supplied plastic anchors. Of course if you have exposed joists, just screw to those. The lamps probably weigh about 1-1/2 pounds each so they are very light! Once the ceiling clips are in place, the lamps snap in easily.One reason that I really like this set is that you are given all of the accessories, wires, clips, screws and anchors to do the job. These lamps are linkable, and the manufacturer tells me you can link up to 6 lamps together end to end. Each lamp uses the same triangular connector on either end of the housing, and it doesn’t matter which end is “in” or which is “out”. If you are going to link the lights together, you begin by connecting the first light to a 110 volt receptacle using the supplied 5 foot cable which has an on-off inline toggle switch. Then you continue linking lamps together end to end using the supplied 48” link cables. As mentioned, you can uses either end of the cable on either end of the lamp.Another option allows you to physically link a couple of these lamps end to end, giving you an 8 foot long lamp. The manufacturer provides a little 1” long transition, which allows two lamps to connect end to end. At the moment, I mounted two rows of 3 running lengthwise in my 24 ft x 19 ft garage. Each of the two rows of three lights is mounted about 5 feet in from the long walls. There is about 3 feet between each lamp in each of the two rows, and the first and third lamp in each row comes in about three feet from each of the shorter walls at opposite ends of the garage. The link cables, being 4 feet each, fit nicely.Oh and here’s another nice touch. Your last lamp will have an open, unneeded socket on the far side. The manufacturer has even considered this detail, and provides you with a plastic plug that easily snaps into the unused socket, making it almost invisible! Something I really like is the fact that the lamps are all white, as are all the cables. They blend pretty well with a finished sheetrock ceiling.I am actually planning to hard wire my lamps in the near future. Note that whichever way you plan to use these lamps, they are intended for direct mounting, rather than hanging from a chain like some other models. I specifically wanted this feature; make sure you do as well. Once again the manufacturer has provided accessories to make hard wiring simple. Rather than using the 48” link cables, you will use the provided 5” jumper wires. These jumpers have the standard triangular plug on one end which can plug into either end of the lamp (Just cap the unused socket). The other end of the jumper has 3 individual wires that have even been stripped for you. If you are good with electrical wiring, just attach each of these jumpers to standard 14/3 or 12/3 romex cable. Otherwise, use an electrician.In my case, I already have a light switch controlling the main light socket in center of my garage. All my lights will tie together in the attic space over the garage and then get wired to that socket. One thing to note is that, by using their jumpers, you don’t have to come through the bottom of their lamp with your romex. This makes installation much easier as you do not need to get into the lamp. The small downside is that the jumper cable will need to go through the ceiling (if you have a ceiling) through a small (probably ¾”diameter) that you’ll drill through the Sheetrock right next to the end of the lamp. It will barely show and after all, these are shop lights.All in all, these are terrific lamps and I am highly pleased. These 45 watt 4800 lumen LED lights are rated for 50,000 hrs usage (typical) and I really like the 5000K color temperature. For me, 5000K is the perfect color.If there is any negative, it would be the quality of the parts used, but at the price point, it’s about what I’d expect. The metal is thin, but the fit and finish are good. So unless you plan on banging these around every day, you should get years of good service out of these. Highly recommend!