This is a unique newly designed window vent kit for all air conditioners on the marketplace. It is not the cloth based type as seen sold by numerous suppliers and does not have the problems associated with that design. This kit can be fitted to most widows up to 1250mm x 1050 mm and all sizes below. It consists of a completely transparent sheet which can be cut with scissors and velcroed to the frame whether the window opens inwards or outwards . It can be a small top opener or a large side opener. Any type of office window that tilts or slides or lifts can be fitted with this sheet. The sheet is then fitted with an adhesive transparent plate that receives the pipe adaptor whether oval or square. This is a DIY sizing exercise that gives a good looking effect that can hardly be recognised as vent system. We manufacturer this product in the UK and can help with bespoke designs should they be required beyond this kits capabilities.