The HERCULES Double X Keyboard Stand KS210B includes a second tier and features the patented EZ-LOK system, has 4 height adjustments and heavy duty steel construction. Specs Base Height x Width- Setting 1: 610 mm x 810 mm (24" x 31.9") Base Height x Width- Setting 2: 750 mm x 690 mm (29.5" x 27.2") Base Height x Width- Setting 3: 865 mm x 550 mm (34.1" x 21.7") Base Height x Width- Setting 4: 950 mm x 390 mm (37.4" x 15.4") Second Tier Height- Setting 1: 200 mm (7.9") Second Tier Height- Setting 2: 225 mm (8.9") Second Tier Height- Setting 3: 250 mm (9.8") Second Tier Height- Setting 4: 275 mm (10.8") Second Tier Height- Setting 5: 300 mm (11.8") Lower Tier- Load capacity: 80 kg (176.4 lbs.) Lower Tier- Depth: 400 mm (15.76") Upper Tier- Load capacity: 40 kg (88 lbs.) Upper Tier- Depth: 340 mm (13.4" Folded Size: 1115 mm x 505 mm x 115 mm (43.8" x 19.9" x 4.5")