The P-120 Flat Lens Port from AquaTech fits and protects the Canon 16-35mm f/2.8 or 16-35mm f/2.8 II lens or the Schneider 150mm f/3.5 LS lens. It screws onto Elite, Delphin, and Meridian Underwater Sport Housings for cameras and is designed for use above water. The port has a depth rating of 33'. Its body and front element are constructed from acrylic, and its base is made of aluminum. Additionally, the front element features a Scratch Abrasive Resistant (SAR) coating. The port is mechanically sealed using no adhesives. The #10901 CZ 16-35mm f/2.8 V2 zoom gear, available separately, is required for zoom control with either 16-35mm f/2.8 lens and enables access to the full zoom range.