3-1/2 x 5" Photo Sleeve
3-9/16 x 5-1/16"   1.5 mil  Polypropylene. No flap.

Made from crystal-clear, archival bi-oriented polypropylene that has passed the Photo Activity Test. Guaranteed safe for the long-term storage of photographs. 

Also use for Glass Lantern Slides. 

Lantern Slide 4-Flap Enclosure
3-1/16 x 4-1/16 x 1/8"
This 70 lb.text, four-flap Lantern Slide Enclosure provides safe long-term storage for lantern slides. The 1/8" scores accommodate the slide thickness and make creasing easy. Place the glass slide emulsion side down, centered on the enclosure. The material is acid-free, lignin-free and buffered.

Lantern Slide Storage Box
4-1/2 x 10-1/2 x 4-1/2"
Holds 70-75 lantern slides.

Made from 60 Pt. Barrier Board. Board is acid-free, lignin-free and buffered with 3% calcium carbonate. Comes with metal-edged corners that allow for safe stacking. Passed the photo activity test (P.A.T.) and certified as being safe for long-term storage. Box ships assembled.