Buy White Rigid Plastic Multi-Card Holders - 50pk (MYID18403025)
BRADY | BLUE Rigid Plastic Horizontal Open-Face Card Holder, 3.56" x 2.68" (100 Holders) - ID Enhancements, Inc.
Milky White Rigid Plastic Card Holder - 100 Pack - ID Card Systems
Rigid Plastic Horizontal Open-Face Card Holder
Frosted Two-Card Rigid Badge Holders, Vertical, Frosted 2.5" x 4.13" Holder, 2.13" x 3.38" Insert, 25/Box - ASE Direct
Brady P/N 1840-6672 from IDcardPrinterSavings
Semi-Rigid Plastic 3x5 Index Card Holder
Amazon.com : 3 Pack - Slim Heavy Duty Horizontal ID Badge Holders - Hard Plastic (Holds 1 Card) Clear Polycarbonate - Single CR80 30 Mil UV Protect Rigid Case w Easy Access