there are many conservatory roof systems and you will need to know which system you have as screw hole distances vary. also are all the covers (triangles) the same size as on some systems different ones are used for hips, main spars and jack rafters. on others covers are the same size but hole distances vary to accommodate different types of spar. however on some the covers are the same.
if you can`t identify your system then google (conservatory roof systems) and find a local manufacturer and take one of your covers to them to see if their`s will fit
levi lewy, September 2009