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Uniform Federal Accessibility Standards (UFAS)

4.13.8* THRESHOLDS AT DOORWAYS.

Thresholds at doorways shall not exceed 3/4 in (19 mm) in height for exterior sliding doors or 1/2 in (13 mm) for other types of doors. Raised thresholds and floor level changes at accessible doorways shall be beveled with a slope no greater than 1:2 (see 4.5.2).

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