ThruFlow Interlocking Panels

THRUFlow Decking

ThruFlow™ Premium Decking offers industry leading products that are easy to assemble, maintenance free, safe and ideal for any outdoor or marine application. ThruFlow designs and manufactures premium products to withstand all Mother Nature can throw at them. We provide you with worry-free, permanent decking solutions that will always go with the flow.

ThruFlow panels have endless possibilities! QRamp is a Modular Access System for accessibility in a wide range of applications. QRamp is constructed of powder coated aluminum and is complimented with patented ThruFlow decking panels for the running surface which makes it the best quality, most attractive, safest modular ramp available on the market today.   The durable, non-slip ThruFlow panels enable rain, snow and debris to pass through the surface, making it virtually maintenance free.  To learn more about the QRamp Modular Access System visit

The Legacy XP panel is manufactured with the most advanced technology to create an aesthetic and resilient panel for your family deck, dock or marina.  This revolutionary take on prefabricated panels has changed an industry to protect what is on and under your dock. Features include:

  • Maintenance-free
  • Easy to assemble with connecting tabs and elongated screw holes
  • Tab and No-Tab option in the 1′ x 3′ and 1′ x 4′ panels that is great for stairs or finishing the ends of your deck or dock clean
  • UV Resistant
  • Non-slip surface holds true wet or dry
  • Allows 43% of sunlight to pass through uninterrupted to protect your dock against uplift caused by storm surge and strong winds
  • Open architecture is environmentally friendly to flora and fauna below your dock enabling them to thrive (recommended by the Army Corps of Engineers)
  • Constructed with new bonding technology incorporating medium strand glass fibers for extra durability against wear-and-tear

The surface of our panels will never get hot under direct sunlight, leaving you free to enjoy your deck or dock in all weather.

Legacy XP Line

ColorsLight Grey Seafoam Maple
Size1’ x 3’
1’ x 4’
1’ x 5’
4’ x 4’ (traditional Legacy)
ThicknessAll Panels 1.2″ thick
Substructure3’ panel – 18” centers
4’ panel – 16”  and 24″ centers
5’ panel – 15” centers
Light Penetration43%
LoadAll Legacy XP 1 x 3, 1 x 4 and 1 x 5 panels exceed 2400 lbs load capacity surpassing the commercial construction requirements
LightweightOn a per sq. ft. basis ThruFlow™ is 55% lighter than other decking products: 1.6 lbs/ft²
Ultraviolet ProtectionIndustry leading UV protection
MaterialBase material is reinforced virgin polypropylene utilizing new bonding technology
Safety360º engineered non-slip surface Exceeds ADA spec’s
Spec SheetClick to Download Legacy XP Spec Sheet
ThruFlow WarrantyLifetime Limited Warranty

24" On Center

16" and 24" centers with elongated screw clearance revolutionizes this panel even further allowing for greater mounting flexibility.

Load Capacity

The Legacy XP panels use medium glass fibre reinforcement and thicker rib structure below, allowing them to withstand greater load capacity.

Tabs or Tabless

The 3’ and 4’ Legacy XP panels are available with and without tabs. This allows you to purchase tab-less panels for a clean edge to your dock or a set of stairs without the effort of cutting tabs off.


Legacy 4x4 panels are lightweight, durable, easy to install, and provide excellent protection.

Maintenance Free

The Legacy 4x4 panel is made from short glass reinforced virgin polymer producing extra durability against wear-and-tear, rot, insects and UV-rays thus making it maintenance-free.

Pass Thru

43% of the Legacy panel is ‘open’ allowing sunlight and storm surges to pass through.


ThruFlow panels are durable and maintenance free allowing you to spend more time enjoying your deck or dock, than working on it. Our panels are also safe featuring a heat-resistant, non-slip surface keeping everyone’s feet firmly planted and minds worry free.


We’re confident in our panels’ design and quality, however for added peace-of-mind each of our products is covered by ThruFLow’s Lifetime Limited Warranty. If, for any reason, your ThruFlow panels don’t live up to your expectations, we want you to know we’ll always make it right.


The ecological impact taking place underneath one’s deck, dock or walkway is rarely considered. Sunlight is an integral part of any ecosystem and ThruFlow panels are revolutionary in their ability to allow light to passthrough protecting the delicate aquatic life below.