921-24-5050-WW Warm White 5050 SMD Light Bulb with Wedge Base

After researching LED bulbs, I chose to use the M4 lights. I ordered 10 of the 921-24-5050 WW and am impresed with them. I ordered on Friday and had them Monday. I am looking forward to using them when not hooked up to power.

I purchased these led bulbs to replace the 921 bulbs in our rv. I could tell a big difference right away.Great lights and a lot cooler than the incandescent bulbs. 921-24-5050 WW. Very pleased so far.

Although I haven't officially tried these lights out yet as our first scheduled trip is upcoming from what I can see so far is that they are brighter and cooler just like advertised. However the real review is about the company and Steve. My order arrived earlier than expected and all my questions were answered promptly and accurately. Hard to find a better online vender regardless of their product. I had a small issue (my problem) in fitting the wedge into the socket and Steve gave me some accurate and fast advice which worked as he said. I would highly recommend M4 and their product set and would definitely purchase from them again......Thank You Steve!

Last year, I installed these wedge base bulbs inside my truck camper with excellent results. They provide great light, are cooler running, and use significantly less electricity. I also installed one in the outside light fixture above the entry door. That bulb lasted only a very short time and burned out. I thought it might have been due to the location of the fixture and the possibility of water intrusion; in any case I figured it was my problem and responsibility since it was in an outside light fixture. I wrote to M4 to get their advice on next steps and what happened next was amazing. I was sent a replacement bulb for the one that burned out. I didn't ask for a replacement and was totally surprised by this level of customer service. I received the new bulb in a couple of days. It's unusual to find both great products and excellent support from distributors. M4 stands at the top of my list for high quality products that work great and amazing customer support. Thanks M4

I wish I would changed out our 921's ten years ago with these LED's Just the right color and they let out so much light.

I to switch the OEM RV TT lightsto LED lights to preclude both the heat and the fixture wear which would have been the result of using the OEM lights. Have yet to use them in the RV due to weather, but did notice they are brighter than the OEM lights. The prices for the LED lights were lower than other venders.

I have purchased several LED bulbs of various sizes for my Sportsmobile and love them, very minimal draw on the house battery. The solar panel has no trouble keeping up the charge. I have now replaced all the interior incandescent bulbs with the Warm White LED bulbs and you can't tell the difference ! Another added plus is that they don't give off any heat at all, very helpful when summer camping.

Circumstances made installing the LED's I ordered impossible, for the moment, but the fantastic service made we want to answer the request for a survey response. I ordered late on a Sunday afternoon. By Sunday evening there was an e-mail indicating our order had been shipped. It was here on Wed! That's prompt & efficient service. If the LED's meet my expectations, we'll have had a very positive experience and will do business again in the future!

We upgraded all the incandescent lights in our RV and tried one Aluminum Cage Wedge Base 24-5050 to compare to the others. We mistakenly believed it would not fit into the socket like the others and very promptly received an optional return authorization, with an explanation that it was the correct base (it was, we just didn't push hard enough). Very impressed with M4's quick delivery and attention to their customers.