Revit Architecture 2022 for Designers
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North American Paper Sizes

US Paper Size	Imperial Size	SI Size	Closest ISO Size
ANSI A ​(Letter)	8.5" x 11"	216 x 279mm	A4
ANSI B ​(Tabloid)	11" x 17"	279 x 432mm	A3
ANSI C	17" x 22"	432 x 559mm	A2
ANSI D	22" x 34"	559 x 864mm	A1
ANSI E	34" x 44"	864 x 1118mm	A0
ARCH C	18" x 24"		A2
ARCH D	24" x 36"		A1
ARCH E	36" x 48"		A0
ARCH E1	30" x 42"		n/a

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Standard International (ISO) Paper Sizes

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