Sharkoon 5.25-Inch Bayextension Mounting Frame for HDDs and SSDs (000SKB525) Suitable for either up to 4x 2.5", or 1x 3.5" and 2x 2.5" HDDs and SSDs Fits into standard 5.25" mounting bays Decoupled mounting for 3.5" HDD Dimensions: 116 x 146 x 37 mm (L x W x H) Weight: ~150 g