Detailed Product Description Features:1) 19' standard installation2) 24-core Dimensions (H x W x D): 130 x 487 x 260mm 48-core Dimensions (H x W x D): 186 x 487x 260mm 72-core Dimensions (H x W x D): 245 x 487 x 260mm3) There are two layers for fiber arrangement and splicing inside incorporated cassette4) The cassette could accept 12pcs of FC or SC adapters.