Havis-Shields offers a new "Slammer" design which increases officer safety. The unique dual "Slam" latch door design allows doors to automatically lock when pushed closed - making loading and unloading potentially combative prisoners easier. In addition, the new aluminum quality construction will not rust and withstands prisoner abuse. Compartment options ' aluminum construction increase payload, allowing for maximum seating capacity - eliminating multiple trips and number of vans needed. Lighter weight aluminum also allows for greater gas mileage, creating savings over steel while providing maximum security. Available for Ford, Chevy, and Sprinter vans.