The sst-105 from northern grow lights are rated for 35w each and $9.75 each. With good air circulation they should be fine. I ran 50w through them without issues but the extra few dollars for the sst-120 might be worth it. I'm not sure when he will have more stock in though.Thank you for the help everyone. Now I just have to find some heat sinks in stock and I will be good to go. Looking to do 12 1212s at 38 watts to get me about 400 for my 4x4.