This is for the sliding alluminium framed windows to allow a 65mm duct hose to vent my printer outside when printing nasty plastics. the end piece can be scaled to what size is needed for the final piece depending on the size of your window. it has tabs to slot together but not lock, use glue to hold together. you will need to find or create an adapter for your printer. the duct pipe i used was this https://www.bunnings.com.au/reln-65mm-x-7m-solid-stretch-ag-pipe_p0081411?srsltid=AfmBOooaiTuB2sM8awG6sM_Pd1PsZ18WgXlLJtgnrAHxXE2T9HJJ7ntz and i created some very basic chunky wall hooks to hold the pipe