307 UltraBox™ Rubber Lined with Mesh Pouch All UK Ultraboxes are tough as nails, o-ring sealed against water and air born particles and built to accommodate an electronic panel in either the lid or bottom of the case if desired. The automatic pressure equalization valve insures easy opening after altitude or temperature changes. Items placed within are protected by a shock absorbent removable rubber liner.   Protects delicate equipment from water, dust & moisture Submersible to 30 feet/10 meters Available with clear lid to view contents or solid lid to protect against light High Impact ABS, LEXAN, polyurethane rubber & stainless steel construction Optional removable rubber liner protects sensitive equipment from abuse Optional nylon mesh lid pouch for storing accessories Automatic pressure equalization valve insures easy opening after altitude or temperature change Designed for mounting of an electronic panel in the lid or bottom of the case Stackable, o-ring sealed, lanyard included. Specifications: Internal Dims: 6.7 x 2.8 x 3.0 in   /  17.0 x 7.1 x 7.6 cm External Dims: 7.9 x 3.9 x 3.2 in  /  20.1 x 9.9 x 8.1 cm Lid Depth: 0.6 in  /  1.5 cm Base Depth: 2.4 in  /  6.1 cm Weight: 0.7 lbs  /  0.3 kg Waterproof: IP67 Operating Temperature: -29° to 71° C  /  -20° to 160° F