Polyester: Three Sides Sealed Enclosure,
Short Side Open
Specification # 500-532 [PDF: 123 KB / 3 p.]
This item meets Preservation Directorate specifications for a long-lasting and durable product, appropriate for protecting LC collections, 2-5% alkaline reserve in all paper products.
Thickness:
- 3 mil for sizes 20" x 24" or smaller
- 4 mil for sizes 22" x 28" or smaller
- 5 mil for larger sizes
Dimensions: Please specifiy dimensions.
Open side
NOTE: P&P Division uses these enclosures for storing photographs that are sturdy enough to be carefully slid in and out of this type enclosure; most often photographs mounted on boards. These would then be stored vertically on their long sides within file cabinet drawers or within Document Storage Boxes (#300-311). (Contact prints, made from original negatives, are stored in Top Loaders in notebooks which makes them readily available for reader access.)
Uses:
To store single items that are sturdy enough to be slid in and out of this housing.
When filling out a Purchase Requisition for this product, be sure to include:
- Full name of product, as appears above
- This page number
- Dimensions
- Quantities

