Clearprint 18" x 24" title block/border vellum paper sheets. Clear Print drafting vellum is a 16# medium weight, acid-free drawing vellum. 100% new cotton fiber vellum paper is excellent product for manual drafting. Transparentized without solvents to produce the proper translucency, as well as the legendary Clearprint archival quality, strength, eraseability (no ghosting), and re-draw characteristics. High tensile strength helps prevent tears. Vellum is used by engineers, architects, draftsmen, graphic artists, to make drawings and sketches to scale in either fractional or decimal dimensions, drawing diagrams, plotting mathematical functions, experimental data, etc. Smooth translucent surface suitable for pencil or ink. PACK OF 10 SHEETS. Plain, unprinted with architect and engineer title block and border. Clearprint 1000HTS 18x24 vellum paper is made in the USA.