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

I was skeptical when ordering, but the M4 warm light LED bulbs were a prefect replacement for my RV's interior lights. At first I ordered 10 of the 921-24-5050-WW Warm White 5050 SMD Light Bulb with Wedge Base. Easy installation and the lighting is better than incandescent 921, but one of the bulbs was defective. Steve at M4 was very responsive, so I ordered 10 more to finish the remaining lights in the RV. Great product and even better service.

Very satisfied with the brightness, color, and price of these bulbs. They match the color of the stock halogens that were in my kitchen and are just as bright if not brighter. I had one that stopped working after a day, but I think the plug base is corroded (over the sink) so make sure you have good clean bases to plug into.

I absolutely love this product. Very happy with the Warm White light. Great workmanship and light quality is perfect. Thanks to RV Geeks for suggesting M4 products. Fast shipping.

Replacing my old bulbs with these LED's was one of the best things I've ever done for my RV. The light was great and MUCH cooler to the touch (not to mention the power savings). FAST delivery as well! Would highly recommend!

I like the savings in energy, but I think my favorite part is how much less heat they generate. The color and brightness almost match perfectly to the old bulbs but when camping in hot country they generate less heat which is great.

My wife love the nice warm light inside the RV. M4 Quality Rocks!!!!!!!!!

Great product and it shipped fast. Friendly helpful customer service.

Over the past few months, I've purchased several 921 wedge base LED lights to replace the traditional bulbs in my RV. So this review is being done after three trips of actual use and with both LED and original 921 bulbs in use at the same time. The LEDs are simply excellent. The warm light is easy on the eyes, they put out almost no heat, and they fit into the existing fixtures with ease. They are brighter than the original bulbs with a tiny fraction of the amp draw. I have both the 921 overhead bulbs in two lumen sizes and the 921 spot light bulbs for the reading light fixtures. In the double light overhead fixtures they put out plenty of warm light and in fixtures where there was only one conventional 921 bulb I've used the 650 lumen LEDs with no problem. They are a bit larger diameter, but they fit my fixtures perfectly and put out twice the amount of light. In the reading lamp fixtures, the original 921 bulbs would be so hot in the fixtures that it was uncomfortable to touch the metal lamp housing. With the LEDs the housing is barely warm to the touch and the light is focused down to make maximum use of the light. M4 products has been great to work with as well. Orders are processed very quickly and the bulbs are sent priority mail. Email notices help track the shipment and order status. Best of all is the quality and price are the best I've found for LED bulbs. I highly recommend M4 for their bulbs and service.

It is refreshing to order from M4 and get exactly what they advertise...no smoke and mirrors here! You will be pleased! Love the output and "warm white" lighting of these bulbs! They seem to match the light of the halogen in brightness with absolutly no heat!