Snap-On Rack Panels' 4U-HS104 of the Snap On half-rack panels are fabric fascias made of Cordura fabric, providing easy module access with no tools needed. The fabric line of Snap-On Rack Panels are ideal for road cases, flight packs, rack servers and studio units that utilize rack rails. These 4RU solid panels will fit any 9.75" half-rack cabinet system.