>>780567
Measure the height and width of the frame. Go to Bunnings or another hardware store and get what you need. They sell different sizes by the metre. And you'll need that spline roller (picrel is the cheapest at Bunnings) unless you want to fuck around with a blunt knife or similar. You need enough fabric so that it sticks out past the frame on all sides by at least an inch. You can reuse the rubber spline. You've got to be able to remove the frame too otherwise it will be a bitch installing with the frame in place. Grab me a snossage with onion and tomata sauce on teh way back please.