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Thru Flow 36" x 12" Decking Panel - Single

Manufacturer: Thru Flow

Item Type: Dock - Decking

Series: Legacy

Typically Ships: 5-10 Business Days

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36" x 12" Thru Flow Legacy XP Series Outdoor Marine Grade Decking

Thru Flow Decking is the best and safest way to deck your dock in areas with large waves or high winds, even hurricane winds. ThruFlow™ is designed to be the decking surface for a dock, pier, deck, patio, or any outside or inside flooring structure. The Legacy XP Panel is manufactured with the most advanced technology to create an aesthetic and resilient panel for your family deck, dock or commercial marina.  It's durable, safe, maintenance-free, storm resistant, environmentally friendly, comfortable to walk on and easy to install.  What more could you want out of a walking surface?

  • Made from Virgin Plastic
  • Reinforced with Fibreglass
  • Contains No Recycled Material
  • Increased Load Bearing and Flexural Stiffness Properties (Very Strong)



The interlocking panels are ideal for docks due to their water resistance and 360° anti-slip surface. You will never have water gathering on the dock or pier that can cause the walking surface to become slippery. No algae or mold that can also lead to a slick surface.

The design of this decking allows light to penetrate below the walking surface, minimizing the effect of the walking surface on the plants and animals below. The Army Corps of Engineers has approved this product in Florida over submerged aquatic vegetation (sea-grass, mangrove habitat, etc.). You will also never have to worry about leaching chemicals and it is also recyclable.



  • Impervious to rot, mold, algae and insects
  • Absolutely NO treating, staining or sealing required
  • Barefoot Friendly
  • UV package designed for Southern Florida exposure
  • Maintenance Free
  • No puddles or splinters!
  • Allows Sunlight, Water and Debris to Pass
  • Cool to the touch, even in hot sun!
  • ADA compliant
  • Helps minimize uplift on decking surface from wind and water
  • Pre-Drilled & Countersunk holes for Easy Installation
  • 18" Centers for Fasteners (6 fasteners per panel)
  • Can be used virtually anywhere a walkway is needed, indoor or outdoor




ThruFlow panels use an interlocking design that allows each panel to blend into the next creating a completed and attractive pattern. Each panel allows for 43% of sunlight to pass through onto the native flora and fauna below the dock and keeping nature happy.

NEW!  Legacy XP panels have elongated screw holes which revolutionize this panel even further allowing for greater mounting flexibility.  This leaves more room for accurate mounting to make sure each panel is lined up with the stringers, even on older docks or decks that may have warped over time or that require the decking to hang over the edge of the stringer.  **XP Panels are compatable with the original Legacy panels**

The panels come in two colors: Light Gray and Maple which is a medium tan. The surface of all Series panels is UV-resistant which means it will never get hot under direct sunlight, and the non-slip surface holds true wet or dry.


The panel not only allows light to penetrate to decking, but the grate style surface also allows water and wind from below to pass through which helps protect your dock from the effects of wave, wind and storm surge damage by minimizing the effect of uplift on the decking surface. Docks with this decking have survived hurricanes in Florida where ALL other docks have been destroyed. The damage these forces can cause is less when the water or wind can pass through with less resistance.



Thru Flow recommends a high-quality #10 or #12 panhead stainless steel screw with a 2.5" length. Screws should be clear through the panel and fastened into the material of your structural frame. It is important to also remember not to tighten the screw down entirely and to allow for expansion and contraction. Hole alignment is also important and the 3' panel has 18" centers and requires 6 fasteners.

We offer a #10 x 2.5" Panhead Philips Stainless Steel Tek Screw (seen in the picture to left). These are a self-tapping screw. Click here to visit this product.



  • Smaller orders ship UPS ground. Larger orders and full pallets ship common carrier freight. Contact us for full pallet orders for custom shipping prices.
  • Other panel sizes are available.
Manufacturer: Thru Flow
Base Group
Product MPN: UTFP36-T
Item Type: Dock - Decking
Part Type: Decking Panel
Series: Legacy
Dims (WxLxH): 36x12x1.2
Product Information
Decking Material: Composite
Joist Spacing: 18 Inch Centers
Concentrated Load: 1,529 lbf
Uniformly Distributed Load: 157 psf
Concentrated Point Load: 473 lbf
Typically Ships: 5-10 Business Days
Shipping Method: LTL Freight
Manufacturer Contact Info
Manufacturer Support Phone:: 1-888-478-3569
Warranty: 12
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Phone: 866-942-6349

Fax: 866-942-6349