This Aqua Tech LP-VWZ Flat Port is for the Canon EF 17-40mm f/4L zoom lens. The port features a direct drive zoom control. The port is threaded and will fit all Aqua Tech housings. No tools are required to add or remove the port.
- The port features a direct drive zoom control
- Acrylic front element is scratch and abrasion resistant
- Machined aluminum tube for port body
- Front element is field replaceable
- Medium diamond knurl grip for ease of installation
- Piston seal o-ring on major thread base