Three replacement parts are listed as suiting Alulite® patio doors and windows: a 25kg front adjustable patio door carriage and roller, the matching 25kg rear adjustable version, and a keyed window catch and spring. A front and rear pair like that is a sign the carriages are what give out. Each sliding panel runs on two, and the adjuster position at one end or the other is what sets the door height and squares it in the frame. Before ordering, take one carriage out and look at which end the adjustment screw sits, because a front adjustable unit will not fit a rear adjustable pocket. Check the roller diameter as well, and weigh up the door, since both units are rated to 25kg and a heavier glazed panel needs more than that.

Trademark notice: Alulite® is a trademark of its owner. TradeBase Australia is an independent supplier of replacement hardware and is not affiliated with, endorsed by or authorised by the brand owner. Brand and model names appear on this page only to identify the windows and doors our parts are made to fit. Unless a listing states otherwise, the parts shown are aftermarket replacements manufactured to suit — not genuine Alulite® parts.