I put 10 of these in a 40x60 with 16 feet walls,
https://www.amazon.com/gp/product/B0761L281Z/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

Plenty of light.

Put 4 of these in the side shed,
https://www.amazon.com/gp/product/B075ZV37CY/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

I used amazon because of the free shipping, buying direct from hyperlite the freight was expensive.

Ronnie