"Highly recommed these windows. Very good quality with everything that you need for fixing. They come complete with sills and end caps, air vents, locking handles, fixing cleats and spacers, in fact everything that you need exept screws for fixing to the blockwork. Well packed and delivered before the given time. In my case there were two air vents missing but a call to Screwfix put me in touch with the supplier and within two days they were delivered. Great service from both Scerfix and the supplier. They have been in for a couple of weeks now so had some weather thrown at them, they are water tight and draught proof. Very pleased with them and fantastic value."