Description from Greendepot
CDX plywood provides superb strength and rigidity as sheathing for walls, roofs and floors in residential and light commercial construction. Green Depot stocks FSC-certified CDX in 1/2″, 5/8″, and 3/4″, and can provide Chain of Custody documentation if needed. No added urea formaldehyde (NAUF) resin is used as a binder. Specify pine or fir.