CDX that is rated by the American Plywood Association or APA is the standard material for use as exterior sheathing, roof decking, or any other general construction purpose. : CDX is one of the less expensive plywood you can buy. C and D refer to the grading of the front and back sides. They are rough and not meant for places where appearance matters. The X means it is rated for exterior use. However, it is only meant for limited exterior use. For permanent exterior use, use a panel with an exterior rating . Refer to (OSB Plywoods)

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CDX Plywood Products
4 X 2	ITEM #
3/8-in	119
1/2-in	120
5/8-in	121
3/4-in	122
4 X 8	ITEM #
1/2-in Shop Grade	11355
5/8-in Shop Grade	58SHOP
3/4-in Shop Grade	34SHOP

Oriented strand board, also known as OSB, consists of wood strands laid in three or more directionally oriented layers at right angles to each other, like plywood veneers. Layers are bonded with resin under heat and pressure.

• OSB is equal in strength to engineered plywood, and stronger than particleboard because the strands are longer and more uniform in size.
• OSB is used for roof decking, furniture, floor sheathing and joist building.

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OSB PLYWOOD
4 X 8	ITEM #
7/16-in APA RATED	13974
7/16-in RADIANT BARRIER	13974RB
7/16-in SHOP GRADE	716OSB
3/4-in SHOP GRADE	34SHOP

Hardwood plywood is an appearance panel for use where engineered structural properties are not important, such as for cabinets and furniture.

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STANDARD HARDBOARD
1/8-IN THICK	ITEM #
4 X 2	2418HB
4 X 4	4414HB
4 X 8	908
1/4-IN THICK	ITEM #
4 X 2	2414HB
4 X 4	4418HB
4 X 8	908

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LAUAN PLYWOOD
1/4-IN THICK	ITEM #
4 X 2	2414L
4 X 4	4414L
4 X 8	9792
1/2-IN THICK	ITEM #
4 X 2	2412L
4 X 4	4412L
BIRCH PLYWOOD
4 X 8	ITEM #
1/4-in	8027
1/2-in	8029
3/4-in	8031

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BIRCH PLYWOOD
4 X 8	ITEM #
1/4-in	8027
1/2-in	8029
3/4-in	8031