16 In. on-center 16 x 18 deck

UnderDeck system kits are comprised of six different parts: White Collector Panels, White Joist Gutters, White Boundary Gutters, Joist Rails, Water Diverters, and Foam Weather Strips. They are made of maintenance free exterior grade vinyl. They have a 15 year limited warranty. They will not react with pressure treated lumber. Our system can create a myriad of uses such as an outdoor living area, storage room, screened in three season porch, and many more. This system is easy to install with just 4 simple steps: 1) Snap a chalk line, 2) Tap to fasten the joist rails in place, 3) Wrap the joist spaces with the collector panels, 4) Cap off the joists with the Joist Gutters. The UnderDeck system can be removed easily for cleaning or for additional improvements to the space. The UnderDeck system will expand and contract independently from the structure of the deck to ensure proper performance in all weather conditions. Each part can be cleaned with mild household cleaners.