Seven replacement parts on this page suit BGC® windows, sliding and patio doors, and framed shower screens. Three are sliding door carriage and roller assemblies — a 15kg medium duty adjustable unit that replaces the Mk2 roller, and two adjustable nylon carriages with acetal rollers that also suit Jason™ doors. The rest are a keyed window vent lock and the shower screen hardware: pick-up blocks in black and white, and a set of three sill blocks. That mix shows where these systems give out — rollers flatten and jam under panel weight, vent lock barrels seize, and the plastic blocks that carry and locate a shower panel crack at the sill. Pull the old carriage out and measure its body length and wheel diameter before ordering; on shower blocks, match the colour and the profile to the existing set.

Trademark notice: BGC® 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 BGC® parts.