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1 x 6 x 12 D&BTR Pattern #116 Tongue & Groove Board at Lowes.com,PCChips/Hsin Tech M747 V1.3 - The Retro Web,1 in. x 6 in. x 12 ft. Pine Tongue and Groove WP4/116 Common Softwood Boards 1612PWP4116 - The Home Depot,1 in. x 6 in. x 8 ft. #2 WP4/#116 Pine Board 16800 - The Home Depot