Best Seller | DAYTON 491A20 CO2 Cartridges,Steel,3-13/32" L,PK12 CO2 Cartridges, Size 3-13/32 in x 7/8 in, Color Silver, Steel Material, Max. Working Pressure 800 psi, 3 13/32 in Length, Width 7/8 in, Clears Clogged Condensate Drains, For Use With 1GDL7, 491A19, Package Quantity 12 ... more DAYTON 491A20 CO2 Cartridges,Steel,3-13/32" L,PK12 CO2 Cartridges, Size 3-13/32 in x 7/8 in, Color Silver, Steel Material, Max. Working Pressure 800 psi, 3 13/32 in Length, Width 7/8 in, Clears Clogged Condensate Drains, For Use With 1GDL7, 491A19, Package Quantity 12 | | $26.85 go to store |