This specification applies to straight-cut (as opposed to bias-cut) plain weave greige (unfinished) glass fabric produced from continuous-filament yarns, suitable for use in the production of coated or treated fabric for electrical insulating purposes. This specification does not cover woven glass fabric tapes and fabrics intended for use primarily in laminated constructions. Fabrics of specified yarn, warp, and filler constructions, and style numbers shall be manufactured in accordance to nominal warp and filler, nominal thickness, nominal weight, breaking strength per unit width, and nominal roll length.