Canvas items (biminis, dodgers, etc.) are typically sourced locally after the boats are delivered and are usually fabricated per the canvas shop's own special sauce in terms of hardware, size, shape, attachment points, hinge points, window locations, grab rails, reinforcement, etc. - there is no 'standard'.
Your best course of action as noted by David above is to contact a local canvas shop and have them replace what you currently have with new material. They can often use your old canvas as a template if it's not too far gone ...
Your forum profile doesn't indicate your location so we can't make any recommendations as to canvas shops in your area.
____________________ Stuart Williams
Webmaster, IP Home Port
The Official Website For Island Packet Yacht Owners Since 1998