Used boat seat swivel slide with Pedestal post.

Tested working slide and swivel lock 

Garelick Boat Seat Swivel / Slide 21000 | 2 7/8 Inch Eez-In Millennium

Boat part number 7700795 is a new Eez-In Millennium Series seat swivel and slide from Garelick, part number 21000 . Commonly used on Crownline Boats.

This seat swivel and slide is constructed out of aluminum. The slide measures approximately 13" L x 7 7/8" W x 4 1/4" H overall and mounts via a 5" x 12" slotted mounting pattern. The swivel mounts via a 2 7/8" ID post.

Specifications:

Boat Manufacturer: Crownline Boats

Part Manufacturer: Garelick

Part Number: 21000

Material: Aluminum

Color: Silver

Overall Dimensions: 13" L x 7 7/8" W x 4 1/4" H

Post Size: 2 7/8" ID

Mounting Pattern: 5" x 12" Slotted

Note these measurements  only include top assembly not post. It is 8 1/2" tall include the pedistal post