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1/2"X 4" -10'BLACK EXPANSION JNT
1/2"X 6"-10'BLACK EXPANSION JNT
Used by homeowners and residential contractors to create everything from lamp post and mailbox bases to deck supports. Easy-to-use cardboard tube, scaled-down version of rigid fiber forms that heavy-construction contractors use. Pour concrete in form, let it dry, then cut away form. Length can be cut down if needed.