The Nimar Flat Lens Port for Canon EF-S 18-55mm f/3.5-5.6 II/USM is a flat glass lens port for an underwater Canon camera housing. It fits an EF-S 18-55mm f/3.5-5.6 II or II USM zoom super wide angle autofocus lens. See Port Chart. Flat ports magnify an image more than spherical or dome ports and are better for extreme close-up shots. This one has a depth rating of 197'.