Space nails ~2″ from ends and ~12 inches apart, always thru panels into strips.
Strips go flush with edge of panels – small gaps are OK.
Nail items A to A, then B to B, then C to C (D is done below).
On floor clamp panels together with strips on outside and nail together.
On table, use 3″ screws to attach a D panel to (3) 2x4s using 3 screws for each 2×4.
Flip D assembly and put on top of box. Nail to attach.
Flip box over with 2×4’s to floor.
Lay second D panel on top with (8) 1.5″ scheetrock screws in poly bag.
Please contact us with any suggestions or corrections.