SKB Cases iSeries 2011-8 12-Mic Case. The 3I-2011-MC12 microphone case holds twelve microphones stored vertically and is part of the iSeries waterproof case line. The microphone holes are designed to secure most popular types of handheld microphones, finger cutouts that provide instant access, and a generous storage compartment for cables and microphone clips. The interior is made of high quality PE foam designed to last. The 3I-2011-MC12 microphone case measures 20" x 11" x 8" deep and is covered by SKB's Lifetime warranty. SKB iSeries Injection Molded Mil-Standard Waterproof Cases are molded of ultra high-strength polypropylene copolymer resin, featuring a gasket-sealed, water and dust tight, submersible design (MIL-STD 810H) that is resistant to corrosion and impact damage. Standard features include a molded-in hinge, padlock loops, Trigger Latch System, snap-down rubber over-molded cushion grip handle, automatic ambient pressure equalization valve (MIL-STD 810H), and resistance to UV, solvents, corrosion, fungus and impact damage (MIL-STD 810H). Product Features. Ultra high-strength polypropylene copolymer resin. UV, solvent, corrosion and fungus resistant (MIL-STD-810F). Complete gasket seal makes these cases absolutely watertight (MIL-STD-C-4150J). Automatic ambient pressure equalization value (MIL-STD-648C & IP67). Resistant to corrosion and impact damage. Continuous molded-in hinge. Trigger Latch System. Rubber over-molded cushion grip handle. Custom cut to accommodate 12 microphones vertically. Lifetime warranty. Product Specifications. Exterior: Hard. Product Weight: 8.89 lb (4.03 kg). Exterior Length: 22 in (55.88 cm). Exterior Width: 14 in (35.56 cm). Exterior Height: 9 in (22.86 cm). Shipping Weight: 10.19 lb (4.62 kg).