A 4050(A) delay closer requires a different PA shoe which is over an inch longer than the standard PA shoe and is stamped with a DA. This is required for the Delay feature to function properly when mounted parallel arm with either the standard regular or hold open arm.
The standard PA shoe is part # 4050(A)-62PA, and has a 4050 stamped on backside of shoe.
The delay PA shoe has a part # of a 4050(A)-62DAPA, and will have a 4050 and DA stamped on backside of the shoe.
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