ThruFlows interlocking decking system is a great choice for Marinas, due to its water resistance, anti-slip surface and grated design. ThruFlow is light weight so it allows for easy installation. Being that ThruFlow is grated it can also protect your Marina walkways from the up lifting wave and storm surge effects. The grated design also makes ThruFlow the environmentally friendly choice because it allows sunlight to penetrate the surface allowing S.A.V. to grow.