Suspenz SUP Expansion Plates – Modular Expansion (SKU: 31-5503 & 31-5504)

Professional Modular Growth for Your Storage System

My apologies for the confusion in the previous breakdown! To clarify, the distinction between these two SKUs is focused on the environmental protection and finish: SKU 31-5503 is the Standard Safety Yellow version, while SKU 31-5504 is the Marine Grade Black version. Both plates provide the same heavy-duty 3-tier expansion capability, allowing you to stack up to three additional boards vertically.

These expansion plates are the “backbone” of a high-capacity Suspenz system. They allow you to mount multiple sets of storage arms (sold separately) to a single set of wall brackets or a free-standing frame. This modular approach is perfect for growing families or enthusiasts who need to store a fleet of SUPs or surfboards in a limited footprint.

Choose Your Environment: Standard vs. Marine Grade

The choice between these two SKUs depends entirely on where you plan to store your boards:

• Standard Safety Yellow (31-5503): This is the go-to for indoor storage in garages, sheds, or basements. The high-visibility powder coating makes the rack easy to see in low-light conditions, helping you avoid accidental bumps when moving cars or gear.

• Marine Grade Black (31-5504): If you live within 5 miles of the ocean or store your boards in an open-air boathouse, the Marine Grade is essential. It features a specialized salt-resistant black powder coating and includes stainless steel hardware to prevent rust and corrosion in harsh, salty environments.

  FULL SPECIFICATIONS & Item Details

  Specification	Standard (31-5503)	Marine Grade (31-5504)
  SKU / MPN	31-5503	31-5504
  Finish	Safety Yellow Powder Coat	Marine Grade Black Powder Coat
  Hardware	Zinc-Plated Steel	Stainless Steel
  Expansion Capacity	3 Tiers (Holds 3 sets of arms)	3 Tiers (Holds 3 sets of arms)

Why These Expansion Plates Are Essential

• Vertical Efficiency: By using these 24-inch plates, you can customize the vertical spacing between your boards. This is critical for boards with large permanent fins or thick touring hulls that require more “breathing room” than a standard rack provides.

• No-Flex Stability: Unlike generic bracket extensions, these plates are precision-engineered from heavy-gauge steel. They provide a rigid, non-flexing anchor point that ensures your boards remain level and secure.

• Complete Hardware Kit: Each set comes with the necessary bolts and locking nuts to attach the plates to your existing Suspenz vertical uprights or wall brackets.

Ready to build your ultimate board tower? Order the Suspenz Expansion Plates in Standard Yellow (31-5503) or Marine Grade Black (31-5504) today!