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Timberline HD®, and transformed it by strengthening the common bond and creating the industry's largest nailing zone. Timberline® HDZ Shingles have the same renowned Timberline quality and performance you know and love, with improved nailing accuracy and installation efficiency! Timberline® HDZ Shingles are easy and fast to install, with an incredible 99.9% nail placement accuracy!
Link: https://www.gaf.com/en-us/roofing-products/residential-roofing-products/shingles/timberline/architectural/timberline-hdz-harvest-blend-colors?_sp=74970455-b0b3-4922-8f16-20d5f5b9d6a2.1646329035325
