ONHI Adjustable Boat Seat Pedestal 14–20 in Height with 7in Slide & Locking 360° Swivel, 9in Base

The ONHI Adjustable Boat Seat Pedestal delivers corrosion-resistant, 14–20 inch height adjustment with a 7-inch slide and a lockable 360° swivel for stable, customizable boat seating.

Designed for anglers and recreational boaters who need a durable, adaptable seating solution, this pedestal combines heavy-duty anodized aluminum construction with a wide 9-inch base to minimize vibration and improve comfort on the water. It installs to common marine seat patterns and meets Class AD Drive Grade standards, offering a balance of strength, stability and corrosion resistance suitable for both freshwater and saltwater use.

How does the height and slide adjustment improve comfort and visibility?

The pedestal provides seven selectable height positions spanning 14 to 20 inches plus a 7-inch fore-and-aft slide. A single lever controls both functions so you can quickly dial in an upright position for casting or a lower stance for cruising.

• Seven distinct height stops for incremental tuning
• 7-inch travel seat slide for optimal reach and posture
• Single lever operation for fast adjustments while seated

What materials and construction make it suitable for marine use?

Built from thick-wall anodized aluminum with a matte brushed finish, the pedestal resists corrosion and requires little maintenance in marine environments. The alloy structure keeps the unit lightweight yet strong, ensuring reliable performance in both salt and fresh water.

• Anodized aluminum body for natural corrosion protection
• Thick-wall construction for long-term durability
• Matte brushed finish hides wear and reduces glare

Will this pedestal mount securely and handle wave impact?

The wide 9-inch diameter base spreads load and dampens motion, while pre-drilled holes match common 2-7/8 inch patterns for straightforward installation. The broad footprint reduces stress on deck hardware and helps the seat remain steady under choppy conditions.

• 9-inch mounting base distributes weight evenly
• Pre-drilled 2-7/8 inch hole pattern for universal compatibility
• Design reduces shock transfer during waves and wakes

How does the swivel and locking mechanism add functionality?

The pedestal rotates a full 360 degrees and includes a positive locking knob so you can either freely pivot or fix the seat in place. This allows anglers and crew to access gear, track the horizon, or secure the seat for underway stability.

• Full 360° rotation for complete directional access
• Locking knob secures preferred position under load
• Smooth swivel mechanism for effortless turns

Who is this for: The ONHI Adjustable Boat Seat Pedestal is aimed at anglers, small-boat owners and anyone upgrading seating on fishing boats, pontoon decks, or utility craft who wants a low-maintenance, adjustable pedestal that meets marine safety standards. It’s best for users who value quick adjustment, corrosion resistance and a stable platform for extended time on the water.