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Use Ø35mm cutter to make cavities on the inside of shutter. (Refer Fig.1).Cavity should be 10mm deep.Fit top housing and bottom housing in top and bottom cavities respectively.Rail is fitted in a slot at top and bottom of cabinet. Groove should be 8mm wide and 6mm deep. (Refer Fig.2).Wheel of bottom housing should sit in bottom rail.Spring loaded guide in top housing is pulled down so as to engage in top rail there by retaining the shutter. (Refer Fig.3).
