Beckson PO512-BS-10 Self Draining Opening Port, 5" x 12", 1" Spigot Depth, Black with Smoked Lens. Innovative angled drainage ramp on outer portion of spigot allows for straight sided hull cut-out, yet drains water. No water enters the boat when you open the port after a rain. Drainage ramp molded into spigot instead of body permits the use of through-bolts for mounting. Ideal for use when installation is within 15? of vertical; for greater angles use Beckson Rain Drain? ports. Use silicone sealant.