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Wise Adjustable Pedestal with Seat Spider Mount - 204083, Boat Seat Accessories at Sportsman's Guide

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Wise 8WP23-15-374 Heavy Duty Boat Seat Pedestal, 2 7/8 Diameter Post, 15 Fixed Height, with Seat Slide Seat Mount, Adjustable 5 Fore & AFT, Seating Accessories - Canada

Wise 8WD015-3-710 Standard Pilot Chair & 8WP23-374 Heavy Duty Boat Seat Pedestal, 2 7/8 Diameter Post, 12 to 18 Adjustable Height, Seating - Canada

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Adjustable Boat Seat Pedestal Boat Seats and Pedestals Boat Seat Pedestals and Bases with Slide and Swivel for Locking Boat Seats Captain Chair 13.5 to 18 Inches Height : : Sports & Outdoors

ONHI Aluminum Adjustable Height Locking Boat Seat Pedestal 13-Inch to 19-Inch,Silver Polished : Sports & Outdoors