Beckson 8 Deck Plate- Screw Out- Diamond Texture Beckson has added an 8 inch screw out deck plate to our line of premier quality deck and access plates. This plate operates just like the Beckson industry standard 4 and 6 screw out deck plates. It is molded of high quality marine grade plastics and is built to last. Though deck plates are no new invention, Beckson was the first to conquer all three safety features. First, a cover that would not open unexpectedly. Second, maximum water tightness.