e-glass vs. standard fiberglass cloth

Ready to lay up the fiberglass at base of windshield on the RV-10.

Van's calls for 9 oz. e-glass. I have Aircraft Spruce 9 oz. standard fiberglass cloth(part # 7781-50) which is a crow foot weave. Is this a comparable glass or do I need to reorder?

Basically, I don't know the difference between e-glass and standard fiberglass.

Thanks,
Tom H.
RV-10
Boynton Beach, FL

Crowfoot

Crowfoot weave is fine. It drapes well on convex/concave surfaces. Have fun,

Mike

Tom,
E-glass is the common variety, and fine for everything on an RV. 7781 is an E-glass.

I love this place.

Thanks Guys.

Tom