We get the 200 watt bulbs at an electical store.. They do not come off the shelf. You should be able to find them where they sell the heat lamps and special bulbs like for outside. They will order them for you if they do not have them. These work best for us and I have tried them all. You can see by this shot of my stallion that there is snow on the ground and his coat is still nice. He gets a sheet and blanket on as well.
We have ours in nomal fixtures that my husband put in all the stalls when we built the barn. We also have 4' double florecent lights in our isle way. If you are going to use the clip on make sure you stay with what is recomended for those.. You can find the 200 watt in the screw in florecent. I did not like those and you can see the difference with the light in the stalls those are in.

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Happy Thoughts
