Not even the size of a t5, let alone t8. Only about 6 inches per light. The aluminum panels are not adjustable at all.

Works great for starting seeds from peat pellets. I have this set up over succulents.

It is compact, with a dimmable light and timer. The height is adjustable for different size pots.

My favorite part is probably the timer function. This allows me to tailor the settings to how my plant likes it. The only downside is that it seems to be coming on later and later.

The timer is an incredible hassle to get it to work. The controller does nothing and the light just flashes a bit.