Wenger Tourmaster riser - 3 step unit, 18 inches each step. Total length of top step 6 feet. Total depth in place 4'7". Holds 12-16 people. Gray carpet. Easy set up and knock down; wheels for easy moving.
Great condition - used 10 hours per year for past 10 years. List price for new over $1200.
Optional add-on accessories available from a variety of sources: as shown in photo, side rail, back rails, additional fourth step.