7/16"-4'x9' ORIENTED STRAND BOARD | For use on taller 9' sidewalls in houses and garages. Vertical nail lines at 16" & 24" Centers to reduce application time. Use appropriate fasteners at the recommended schedule and gap panels 1/8" on the ends and edges of each panel. All edges are sealed for moisture and weather resistance. Sheathing panels are to be used vertically as wall sheathing over studs at 24" O.C. maximum. Check local building code for requirements. Other manufacturers may be substituted at times, Georgia Pacific is our main supplier.