Tri-Sorb/Molecular Sieve, Tyvek Packets, #4273/01AD12A40- 1 Gram Packet Size: 22mm x 38mm” Packaging: 5,000 packets per Carton W/ Liner. Volume price breaks are available online at 10 Cartons. Please contact us for pricing on quantities over 10 cartons. Pricing is per Carton.