8 1/2 x 11 Blank Perforated Paper with Pastel Yellow tinted 3 1/2" return, 20#, Billing Paper, 500 sheets/ream (23-0267) 8 1/2" x 11" paper with microperf 3 1/2" from bottom in pastel yellow. 20# paper 500 sheets in the ream Use for billing, statements, invoices, receipts, gift certificates, letters with a return and more. Can also be used for creating coupons.