Philizon 400w led

What kind of footprint should I expect with a 400w philizon led?

I have a 900w, seems to be fine for one plant. 2x2

Thanks, my buddy has 2x400win a 4x4 tent with 4 plants. They don't seem to be filling in. I'm unfamiliar with leds. Plants seem healthy otherwise. I suggested that the quality of light seems to be good just not enough quantity.

I'm pretty happy with my philzon for an entry level led. For a 4x4 u would probly need 4 of the 900w for good yields. Looking at arround 800 true watts.