Top compartment: 28' wide x 20" deep x 16" tall
Bottom compartment: 28x20x20h
I see 3 potential uses.
1. use as a dual seedling/clone chamber with cheap Amazon LEDs.
2. Cut out the middle and use it for vegging a mother plant for perpetual grow. With a bunch of CFLs
3. Try a SOG grow lollipop style with 3-4 clones a square foot in 4"x4" pots. (Which low cost light would be good for this?)
Light budget $150 max