Good Performance: Porthole skylight is strong abs frame makes it anti-aging, anti-corrosive and ultraviolet resistant
Good Quality: Rectangular porthole is 4mm(0.15inch) thickness tempered glass has high strength, clarity, and chemical resistance
Accessories Description: Marine window frame is corrosion free synthetic fittings and durable water-tight rubber seals
Reasonable Design: Plastic boat porthole is easy "click-in" construction,the two fittings can be loosened to allow you to swing open the porthole
Easy to Install: Porthole skylight is easy to install, pre-drilled countersunk fastening holes (screws not included)