These are the highest quality boards found anywhere!
At 42-Mil, these are twice as thick as regular backing boards!
Made from 100% acid-free, virgin wood, cellular fiber, 42 mil. thick cardboard.
Contains a 3% alkaline buffer and a pH content of 8.0-8.5.
Sold in packs of 50; Measures 7'' x 10 1/2''.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 7.09 inch
Height : 2.09 inch
Length : 10.55 inch

Item Weight: 3.6 pounds (View shipping rates and policies)
Shipping Weight: 3.77 pounds (View shipping rates and policies)

ASIN : B00KA26P6Q