Endorse Mesh Mid-back Work Chair, Supports Up To 300 Lb, 17.5" To 21.75" Seat Height, Black Plastic spray bottle is made from minimum 25% post-consumer waste The column is 16-gauge steel

The column is 16-gauge steel with a 3" diameter

Fixed heads create three 9/32" holes

two sets of pre-punched covers

To select correct diameter

Endorse Mesh Mid-back Work Chair, Supports Up To 300 Lb, 17.5" To 21.75" Seat Height, Black Plastic spray bottle is made from minimum 25% post-consumer waste The column is 16-gauge steelMesh mid back task chair features adaptable comfort geometry plus the added benefit of an easy to use built in lumbar adjustment for exceptional lower back support. Synchro tilt promotes circulation and spinal alignment and the standard pneumatic height and seat glide controls accommodate people of varying heights. Adjustable arms help support the forearms and shoulders. The ilira stretch back material provides natural ventilation.