Put the finishing touch to your boat's Man Ship Portlights with screens. These are screens that have been designed for Man Ship series of opening ports. These screens are easy installation and removal. They are constructed from fine Aluminum Framing with Fiberglass screens and Rubber gaskets to ensure a tight fit. They fit to a 1-1/4" Radius.These high quality screens fit in snug to keep insects and bugs out of your boat.