Viskon-Aire produces stitched rolls of fiberglass and synthetic media in 45%, 65%, 85%, and 95% ASHRAE efficiencies. These stitched rolls are produced from 16" (406mm) to 39" (990mm) wide. The rolls have 8 or 12 rows of spaced stitching covered with hot melt glue and the edges are sewn shut with overlock stitching. We also have the capability to provide pockets cut to your size specificiations.