Hi Chris, It will be an easier job by finding the circumference of your net , and then checking out the sizes against what is available . I make net frames from steamed bent ash or laminated bamboo, and trying to find a net is a nightmare unless I make them to a size I am familiar with..really all this amounts to is measuring the length of the net around where it slides onto the frame I.E the circumference if it is round, or if it is triangular then the length of the three sides of the frame etc.
I normally use Snowbee replacement knotless mesh , which comes in 3 sizes plus one with larger mesh for Salmon. The mesh is traditional diamond pattern . If you can tell me circumference of your frame I can measure mine and see if a Snowbee will fit it if you like , it may take a few days as I am on Holiday atm, and my own nets are under a pile of “stuff” in the car.
View attachment 16293
David.