The Excel Series of Connection Boxes offer increased pair capacity while maintaining an industry standard footprint. The stainless steel backmount frame verticals support 237 Style strips giving a normal capacity of 340, 690, 1020 and 1600 pairs depending on the model. The Excel Connection Box Range allows an extra 5 way backmount to be fitted under the standard verticals increasing the capacities to 390, 780 or 1170 pairs. The door opens through a 180° for an ease of access, it can be removed entirely using quick release hinges and is easily reversed for left-right opening applications.