Trex Universal 1 in Black Hidden Deck Fastener 50 sq ft (94 Pack) Cabinets 5mm Acclimation Time Required Yes 5mm Acclimation Time Required Yes Antimicrobial No Commercial Residential Residential Construction Engineered Dent Resistant No Fade Resistant No Gloss Level Low Hardness Scale (Janka Rating) 3 (Janka rating 1261 1400) Installation Level Any level Installation Location Above grade On grade Below grade Installation Type Glue down Janka Hardness Rating 1360 Locking System Tongue and groove Number of Plies 7 Padding Included No Paintable No Parquet No Pet Friendly Yes Photosensitive Yes Recommended Flooring Underlayment Item Number 670312 Sample Available Yes Scratch Resistant No Skid Resistant No Sold As Carton Species White oak Stain Resistant No Subfloor Type Plywood or concrete Texture Smooth Traditional Underlayment Included No Warranty Lifetime Water Resistant No Waterproof No Wood Grade Premium Corresponding Moulding Item Number 4659390 even with regular cleaning the fasteners are made with stainless steel and glass filled nylon for excellent resistance to outdoor elements Transform your outdoor space with the Trex Universal Hidden Deck Fastener Kit