Passes SMACNA 1/2 in., 1 in., 1 in., 4 in., 6 in. and 10 in. pressure classes and seal classes A, B and C (results confirmed by the SMACNA Research and Testing Institute) for use on rigid sheet metal HVAC systems.
In celebration of Independence Day, We will be closed July 3 - 8. Have a Safe & Happy 4th!