FastenMaster Cortex for AZEK Trim 2-in Gray Concealed Screw Hidden Fastener 50-lin ft (75-Pack) in the Specialty Fasteners & Fastener Kits department at Lowes.com
How to Install PVC Trim-Board Screws - YouTube
Solexx 1” White Galvanized Screws for PVC - Pack of 100 – Greenhouse Megastore