What is the maximum size of a ITS/WHI fire rated three (3) sided frame?

ITS/WHI Fire Rated three (3) frames are available in the following maximum door opening sizes:
  1. F and FN-Series:
    • 4' 0" X 10' 0" single door
    • 8' 0" X 10' 0” double door or pairs
  2. MU-Series:
    • 4' 0" X 9' 0" single door
    • 8' 0" X 9' 0” double door or pairs
  3. DW and K-Series
    • 4' 0" X 9' 0" single door
    • 8' 0" X 9' 0” double door or pairs

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