Incorporate 11 security features recommended by the National Check Fraud Center. Compatible with most money management software programs. Security features include: Check-21 compliancy VOID pantograph security warning VOID when copied Anti-splice backer security feature listing box watermarks check verification number coin reaction and microtext print. Paper Color(s): Blue Marble Paper Weight: 24 lbs. Sheets Per Unit: 500 Rolls Per Unit: N/A.Unit of Measure : Ream