Hi Rose, You won't see them on display at any company as I designed them and instructed the window manufacturer how to make them. They were made by Stegbar windows based on their standard Georgian windows, which are normally powder coated white. I instructed to make them in powder-coated black but to exclude the vertical divisions. I think that most aluminium window manufacturers should be able to make them - but none of them will have them on display. I don't think that they would look very effective if you were using double glazing. This project was completed over 20 years ago (yes I have been in the business that long!) so I hope that the window manufacturers are still making Georgian style sliding doors! Best of luck, Dr Retro of Dr Retro House Calls

Will they be open at night in bedrooms so you need airflow and blockout because that conflicts. Short windows either roller blinds to sill height or curtains to floor

Colonial panes looks awful on sliding windows. They look best on double hung. What I don't really get is why you'd want to build an American-styled home in a state known for it's vernacular architecture which is very similar in appeal? Hamptons/Qlder are almost the same thing but one will look authentic in QLD and the other not so much. This house is sitting in a hot state and yet it has almost no eaves, limited deep verandahs. That style is built for a temperate climate (the USA shares practically no climate similarities with Australia except in Florida). So the owners opted for the climatically different house and put it in the one state where the vernacular would actually function better. It would have been a simple thing to Hamptoms style a Qlder and benefit from both.

Bifold windows have been installed in our new kitchen servery opening to the outside pergola as shown in the first picture. The windows are from Trend Windows. The gap at bottom ranges from 4mm to 6mm. There is an obvious concern of weather and insect ingress through the gap. The renovation contractor has stated that Trend offer no sealing solution in this application and was intending to leave it unsealed. There is a channel in the frame under the window as shown in the second picture. The contractor states this is not suitable for a seal installed in the channel (such as from Dooorseals.com) because of the metal plates at the end of each window panel. That is, there would be a gap in the seal at the end of each panel. The contractor’s recommendation is to use a stick on brush type seal adhered to the outer side of the channel and also covering the end plates. Is my contractor right? Has anyone encountered this problem before and can recommend a product that would best suit the purpose. Many thanks.