The interior transforms into a snug cradle for virtually any non-rackable mixer up to 40" x 31". Corner cleats securely fasten to the Velcro bed of the case to hold your board firmly in place. SKB is our premier supplier of instrument and gear cases. SKB builds their products with military-spec, ultrahigh molecular weight polyethylene and premium hardware. All SKB hardshell cases are unconditionally guaranteed forever. That means if you break it, they will repair or replace it at no cost to you.