Home Furniture & Seating Seating, Tables & Pedestals Seat Hardware Heavy Duty Mainstay Adjustable Height Package with Slide & Swivel – 2-7/8″ (Adjustable Height: 12″ to 14-3/4″) Springfield Marine Heavy Duty Mainstay Adjustable Height Package with Slide & Swivel – 2-7/8″ (Adjustable Height: 12″ to 14-3/4″) $593.79 Heavy Duty Mainstay Adjustable Height Package with Slide & Swivel – 2-7/8" (Adjustable Height: 12" to 14-3/4") quantity Add to cart Product Details Product Details Adjustable Height: 12″ to 14-3/4″ Rigid 4-keyed anodized aluminum post. Diameter 2-7/8″. 9″ round anodized base. Air-powered height adjustment. 500 Newton cylinder. Locking Trac-LockT slide & swivel. Bulk. ABYC Class: (AD) H-31 Driver.
