These "Command Strips" are a wall-damage-free hanging product made by 3M. They will allow you to firmly adhere your Track Art to the wall with infinite prepositionability due to the velcro, and easy removal without damaging your wall. Watch this quick video by 3M which shows how the product works
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Command™ Large Picture Hanging Strips
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3M Command Picture Hanging Strips Medium, 3 Pairs
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Command™ Bath Picture Hanging Strips 17206B-EF, Large, 4/Pack
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Command™ Picture Hanging Strips 17206-C, White, Large, 8 Strips Per Pack, 8 Strips Per Pack, 16 lb