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Withdrawn HPDs

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  1. FeltWorks Blades and Open Cell/Armstrong World Industries/2026-01-28

    FeltWorks Blades and Open Cell/Armstrong World Industries/2026-01-28

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    Open the PDF · HPD 43229

    Expiration Date: 2029-01-28

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    Linear and interlocking blades

  2. Clean Room Suspension System Steel/Armstrong World Industries/2026-03-30

    Clean Room Suspension System Steel/Armstrong World Industries/2026-03-30

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    Open the PDF · HPD 37401

    Expiration Date: 2029-03-30

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    This suspension system with integral gasket is designed specifically for clean rooms, food processing areas, and data centers.

  3. FrameAll Drywall Grid Short Span Drywall Framing System QuikStix Drywall Grid/Armstrong World Industries/2026-03-09

    FrameAll Drywall Grid Short Span Drywall Framing System QuikStix Drywall Grid/Armstrong World Industries/2026-03-09

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    Open the PDF · HPD 33907

    Expiration Date: 2029-03-09

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    Pre-engineered galvanized steel drywall ceiling suspension systems that install faster than traditional track and channel drywall framing.