You know I love me some Sansi grow lights. Their new 70w LED is a small low profile, water resistant 9”x9” box. Amazon has it for $63 plus a 15% off coupon... SANSI has a black friday code (works right now) for 20% off that STACKS. I just ordered two for $44 each... thats almost what I paid for ONE 36W bulb. I have one already and it fits awesome on top - so low profile it is same height as my t5s.