Whether it is to seal or conceal instrument installation or access holes, This durable cover plate Molded from UV stabilized, acetone-resistant polypropylene ensures a reliable seal while still allowing easy removal for visual inspection. Suitable for hole sizes up to 6 inches in diameter. Requires six #8 fasteners. SeaChoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. SeaChoice is run for and by boaters offering a wide-ranging product line while remaining affordable.