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3i Series Cases are injection molded from ultra-high strength polypropylene copolymer resin, specified by the U.S. military for cases and containers. Features a gasketed, water and dust-tight submersible design, meeting military standard MIL-C-4150J. The automatic ambient pressure equalization valve self-regulates for different altitudes meeting military standards MIL-STD-648C and IP67. It is resistant to UV, solvents, corrosion, fungus and impact damage, surpassing military standard MIL-STD-810F. Features a continuous molded-in hinge with stainless steel pin, a patented trigger release latch system, and a comfortable, snap-down, rubber over-molded handle. All 3i Series Cases are backed by an Unconditional Lifetime Warranty. Key locking "TSA" accepted versions also available.
Injection Molded Cases (3i Series)
Unit of Measure
1 2 3 

Item #

Internal Length

Internal Width

Internal Height

Lid Depth

Base Depth

3i-2213-12 N/A 22.00 in N/A 13.00 in N/A 12.00 in N/A 2.00 in N/A 10.00 in
3i-2217-8 N/A 22.00 in N/A 17.00 in N/A 8.00 in N/A 2.00 in N/A 6.00 in
3i-2217-10 N/A 22.00 in N/A 17.00 in N/A 10.62 in N/A 2.00 in N/A 8.62 in
3i-2217-12 N/A 22.00 in N/A 17.00 in N/A 12.75 in N/A 2.00 in N/A 10.75 in
3i-2222-12 N/A 22.52 in N/A 22.52 in N/A 12.50 in N/A 2.00 in N/A 10.47 in
3i-2317-14 N/A 23.00 in N/A 17.00 in N/A 14.00 in N/A 2.50 in N/A 11.50 in
3i-2421-7 N/A 24.12 in N/A 21.00 in N/A 7.00 in N/A 2.00 in N/A 5.00 in
3i-2424-14 N/A 24.00 in N/A 24.00 in N/A 14.00 in N/A 2.00 in N/A 12.00 in
3i-2617-12 N/A 26.08 in N/A 17.00 in N/A 12.00 in N/A 2.00 in N/A 10.00 in
3i-2914-15 N/A 29.00 in N/A 14.00 in N/A 15.00 in N/A 2.00 in N/A 13.00 in
3i-2918-10 N/A 29.00 in N/A 18.00 in N/A 10.85 in N/A 2.00 in N/A 8.85 in
3i-2918-14 N/A 29.00 in N/A 18.00 in N/A 14.00 in N/A 2.50 in N/A 11.50 in
3i-2922-16 N/A 29.00 in N/A 22.00 in N/A 16.00 in N/A 2.00 in N/A 14.00 in
3i-3016-10 N/A 30.00 in N/A 16.00 in N/A 10.00 in N/A 2.00 in N/A 8.00 in
3i-3019-12 N/A 30.50 in N/A 19.50 in N/A 12.00 in N/A 2.00 in N/A 10.00 in
3i-3021-18 N/A 30.00 in N/A 21.00 in N/A 18.00 in N/A 2.00 in N/A 16.00 in
3i-3026-15 N/A 30.75 in N/A 26.00 in N/A 15.50 in N/A 2.00 in N/A 13.50 in
3i-3424-12 N/A 34.50 in N/A 24.50 in N/A 12.75 in N/A 2.00 in N/A 10.75 in
3i-3613-12 N/A 36.00 in N/A 13.50 in N/A 12.00 in N/A 2.00 in N/A 10.00 in
3i-3614-6 N/A 36.50 in N/A 14.50 in N/A 6.00 in N/A 1.50 in N/A 4.50 in
3i-4213-12 N/A 42.50 in N/A 13.50 in N/A 12.15 in N/A 2.00 in N/A 10.15 in
3i-4214-5 N/A 42.50 in N/A 14.50 in N/A 5.50 in N/A 1.50 in N/A 4.00 in
3i-4217-7 N/A 42.49 in N/A 17.00 in N/A 7.52 in N/A 2.05 in N/A 5.47 in
3i-4719-8 N/A 47.00 in N/A 19.00 in N/A 8.00 in N/A 2.00 in N/A 6.00 in
3i-4909-5 N/A 49.00 in N/A 9.00 in N/A 5.00 in N/A 1.50 in N/A 3.50 in
Unit of Measure
1 2 3