120 Negative Strip Protectors for 3 or 4-Frame 120 Negative Strips 2-9/16 x 10-1/16" 4 mil Polyester(Mylar)
Open on three sides. Come with a 1/4" lip on one long edge.
Our Polyester material is approved by the Library of Congress as safe for indefinite storage and has passed the Photo Activity Test (P.A.T.). Use in acid-free storage box XNEGTAN.