Abstract: A cassette storage basket configured for mounting on a rack mounted storage system. A wire-form basket includes an open front defined by a rectangular frame, with the frame rearwardly tilted to give the basket a triangular profile. A rear wall of the basket incorporates at least one upper hook and a rearwardly extending lower abutment to tilt the bottom of the rack-mounted basket from the horizontal to protect cassettes stored in the basket during transport.