Technical Specifications

ManualsBrandsTimber Products ManualsBuilding materials1/4 x 4 x 8 B4 Natural Maple MDF Core Plywood

1

Updated March, 2012

See Other Side for Face

SKU: 125-1840

ANSI/HPVA National Stan

dard

for #4 B

acks

*Typical Back

Core

*Appearance will vary.

Made in t

he USA

1/4” - 4’x8’ B4 Grade

Natural Maple

Rotary Cut, MDF Core

Hardwood Plywood

Grade Description

4

Sapwood/Heartwood

Yes

Discoloration

Yes

Mineral Streaks

Yes

Sound Tight Burls

Yes

Maximum Number of

Tight Knots

Unlimited

Maximum Combined

Number of Knotholes

and Repaired Knots

Unlimited

Wormholes

Yes

Splits or Open Joints

1 inch for one-

fourth length of

panel; ½ inch for

one-half length of

panel; ¼ inch for

full length of

panel

Rough cut/ruptured

grain

Yes

Bark Pockets

Yes

Laps

Yes