The papers are acid free

5") dark base envelope is a minimalistic yet stylish option available in a lovely shade

also known as Sheet Sleeves

Three buttons and scroll wheel for use with USB cable for connection

which helps it last over the long term

Quantum Storage Systems Ultra Stack & Hang Bin, 11" W x 5" H x 10-7/8" D, Red - 4 Pack sofas_futon_334205 The papers are acid freeHangs on louvered panels, rails and carts. Optional dividers and clear windows available for most units. Stackable. Large molded front label slot for ID labels. Autoclavable up to 250 degrees F. Heavy duty, virgin, high density polypropylene polyethylene.