Duo-Flip - Non-Flammable Gas Flammable Gas Blank
These Duo-Flip systems offer flexibility, durability and savings.
Self-contained placards easily fold over four aluminum hinges.
Four stainless steel fasteners lock your chosen combination securely in place.
Duo-Flip is approved for use by private and fleet carriers.
All systems also come with a blank placard. 

Price per Duo-Flip Placarding Solution - 2 Placards