Hammond 1455 Series Blue Aluminium Instrument Enclosures – Hammond 1455L1201BU, This blue extruded aluminium instrument enclosure from the Hammond 1455 Series, 123mm length, 103mm width, 30.5mm height (including end panels), has been designed to house PC boards. Hammond 1455L1201BU Extruded Aluminium Enclosure 123 x 103 x 30.5mm Blue