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This heavy-duty D1350-336 vertical lift drum pair is designed for large commercial and industrial garage doors using vertical lift systems. Each drum supports up to 1,100 lbs. and accommodates cable sizes up to 1/4”. Designed for doors up to 28’ high, these drums provide reliable cable travel and lifting performance for demanding applications. Sold as a pair.
Cable length is calculated as: floor to shaft center + 352” minus door height.
Cross Reference: APCO 1350-28, OMI 28 VL, M340-8500.