Folder+Stock

Folder stock is the material use to make archival quality file folders but comes in flat sheets - it can be used to make customized enclosures such as 4-flap folders.[1] They are also used for special size folders, filing sheets and phase boxes.

It comes in several weights and types including buffered and unbuffered. See: Buffered vs. unbuffered

Unbuffered Lightweight folder stock: University products (photo), "unbuffered 7 point paper is off-white in color and has a pH between 7.0 and 7.5. It scores easily and has excellent folding characteristics. Great for making folders, envelopes, dividers or for interleaving, lining and printing. sheet size is 32 x 40, grain long. Price per package of 100 sheets."[2]
 * ~ Qty ||~ Item No. ||~ Sheets/Pkg ||~ 1 ||~ 5 ||~ 10+ ||~ Ship Info ||
 * || 670-3240 || 100 || $235.70 || $222.35 || $202.30 ||  ||

Purma/Dur Folder Stock: University products (photo), "This .010'' thick folder stock is sturdy and durable, excellent for making special size folders, as a divider or for backing prints. It is acid-free, lignin-free and buffered with a pH of 8.5 (+/-.2). Available in light tan. Price per package of 100 sheets."[3]
 * ~ Qty ||~ Item No. ||~ Size ||~ 1 ||~ Ship Info ||
 * || 750-1620 || 16" x 20" || $64.45 ||  ||
 * || 750-3240 || 32" x 40" || $232.00 ||  ||

Carr McLean, "These sheets are used by our customers to make special size folders, filing sheets and phase boxes. Our heavy tan paper is the same product used to manufacture map folders. They are also used by customers who desire a very heavy interleaving sheet. Grain runs in the shorter direction on all sizes except H-10850 (30" x 40"). .010 &.020 thickness. Available in Packages of 10 and 50."[4]

Purma/Dur Heavy Duty Folder Stock: University products (photo), "Similar to the Perma/Dur folder stock except .020'' thickness for extra stiffness. It has a variety of uses in addition to the construction of sturdy protective folders. Ideal for making phase boxes, vertical standing dividers, print backing, drawer liners, lightweight mats, etc. Caution must be used when folding as this stock must be scored and folded along the grain. Available in light tan. Price per package of 50 sheets."[5]
 * ~ Qty ||~ Item No. ||~ Size ||~ 1 ||~ Ship Info ||
 * || 750-2620 || 15" x 20" || $69.50 ||  ||
 * || 750-3040 || 30" x 40" || $236.35 ||  ||
 * || 750-4060 || 40" x 60" || $395.95 ||  ||

Carr McLean, .020 thickness

[1] Preservation of Archival Materials Course Notes, George Brown College, Spring 2012. 65 [2] University Products, //Unbuffered Lightweight folder stock//, http://www.universityproducts.com/cart.php?m=product_list&c=775 [3] University Products, //Purma/Dur Folder Stock//, http://www.universityproducts.com/cart.php?m=product_list&c=948 [4] Carr McLean, //Hollinger Map Folder Stock,// http://www.carrmclean.ca/CategoryGroupBrowser.aspx?GroupNo=901 [5]University Products, //Purma/Dur Heavy Duty Folder Stock,// http://www.universityproducts.com/cart.php?m=product_list&c=949