.gb-wrap{max-width:100%;font-size:15px;line-height:1.6} .gb-wrap h2{font-size:1.25rem;margin:0 0 .6em} .gb-intro p{margin:0 0 .9em} .gb-acc{border-top:1px solid #ddd;padding:.65em 0} .gb-acc:last-of-type{border-bottom:1px solid #ddd} .gb-acc>summary{cursor:pointer;font-weight:600;list-style:none;padding:.2em 0} .gb-acc>summary::-webkit-details-marker{display:none} .gb-acc>summary::after{content:"+";float:right;font-weight:400} .gb-acc[open]>summary::after{content:"\2013"} .gb-acc .gb-body{padding:.4em 0 .9em} .gb-wrap ul{margin:0 0 .9em 1.1em;padding:0} .gb-wrap li{margin:.25em 0} Trex Transcend Lineage - Composite Decking Transcend Lineage is Trex's multi-tonal capped composite board, built with SunComfortable heat-mitigating technology to stay noticeably cooler underfoot in direct sun. Grooved boards take a hidden fastener for a clean field; square edge boards face-screw for stairs and the deck perimeter. Specifications Actual board size 0.94 in. x 5.5 in. Grooved edge: 12, 16 and 20 ft. Square edge: 20 ft. About 2.4 lb per linear foot: 28.8 lb at 12 ft, 38.4 lb at 16 ft, 48 lb at 20 ft Capped composite core, made with 95% recycled and reclaimed material Colours: Rainier, Biscayne, Jasper, Carmel, Island Mist, Salt Flat, Hatteras 50-Year Limited Residential Warranty Questions Grooved or square edge - which do I need?Grooved boards run the main deck field with a hidden fastener. Square edge is face-screwed and used for stairs and the outer perimeter, where a hidden clip has nothing to grip. Does it need staining or sealing?No. Colour is capped into the board, not a surface coating. An occasional rinse with soap and water is all it needs.