Need help, measurement for HH Safari

[Brickwurx mfg.]

Just ordered the HH Safari classic while on sale for 49 bucks! I'm looking to order NoSeeUm mesh to add the bug net. But need some sizing specs as I don't have a Safari, and want the other goods to get here about the same time. The ridgeline I can figure out by visiting HH.com, but I need a measurement from the ridge to the Asym tie out point on each side at a 90 degree angle to the line. I can only find NoSeeUm in 52" wide lengths. Worried it isn't wide enough as one piece. Found some similar materials at Joanna fabrics at 58", but without some help, it may not work either.
Thanks for helping,
Bricks

[PDA]

Look at Fronkey's video just below in this thread. SHows another (much simnpler) way of making a bug net which uses the widths you are mentioning.