Plywood is used to build window and door openings in concrete walls. In conjunction with treated 2×6, bucks are built and set in place prior to concrete pouring so that windows and doors can be installed in the openings later. For bucks, the recommendation is to rip the plywood to the full block thickness to help secure the bucks to the block during the pour.
Plywood is sold as full 4’x8′ sheets but can be custom cut and built to suit any project or opening requirements.
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