Home Furniture & Seating Seating, Tables & Pedestals Seat Hardware Regular Mainstay Adjustable Height Package with Slide and Swivel – 2-3/8″ (Adjustable Height: 14-1/2″ to 20-1/2″) Springfield Marine Regular Mainstay Adjustable Height Package with Slide and Swivel – 2-3/8″ (Adjustable Height: 14-1/2″ to 20-1/2″) $485.99 Regular Mainstay Adjustable Height Package with Slide and Swivel – 2-3/8" (Adjustable Height: 14-1/2" to 20-1/2") quantity Add to cart