4â Space Rack Case Theâ Seismic Audio Professional & Tour Gradeâ line of rack cases are durable, tough, and built to handle anything the road throws at them.â They feature allâ plywood construction and a laminated exterior with chrome trim.â Professional-gradeâ hardware includingâ heavy-duty twist latchesâ and spring-loaded handles with rubber grips. Theâ Seismic PTR Series Rack Cases have heavy-duty front and rear rack rails giving you the confidence your gear is secure!â These road cases are perfect for all yourâ power amplifiers, effects, compressors, EQs, rack mount snake cables and rack drawers. We know how valuable your PA/DJ gear is, so be confident they are secure and protected with a Rack Case from Seismic Audio. Specifications Model #: SA-PTR-4U |â 4 Space PA/DJ Rack Standard 19" Mounting Rail Width Heavy duty and ready for abuse | Black with aluminum rails 3/8" plywood Construction | Lightweight, Pro design Front and rear removable doors Has dual 4" steel link locks on both doors Dual spring handles on each side 4 steel L brackets added for strength per side |â Very well braced Steel rack rails - Front and rear rack rails Weight:â 32.1lbs Outer Dimensions with Doors On: Height: 9 3/8" - Width: 21" - Depth: 26" Inside Dimensions: Rail to Back with Rear Door On: 20 1/2" Rail to Rear Edge of Case with Door Off: 18 1/2" Front Rail to Rear Rail: 17 1/2"