Product Description:
Strong ABS Molded Design, Anti-Aging, Anti-Corrosive, Ultraviolet Resistant
4mm Thick Tempered Glass
Casted and Polished 316 Stainless Steel Accessories
Corrosion-Free Synthetic Fittings
Long-lasting Water-Tight Rubber Seals
NOTE: BLACK TEMPERED GLASS Dimensions:
Custom Seal for Water Resistant Product
> 1/4" Temper Glass for Strength, Clarity, and Chemical Resistance
> The two fittings can be loosened to allow you to swing open the porthole
> Heavy duty long-lasting rubber seals
> Easy click-in design
> Easy to install, pre-drilled countersunk fastening holes (screws not included)

Dimensions:
Overall Diameter: 8.5"
Diameter Opening w/ Open Window: 5 3/4"
Glass Window Diameter: 5"