Handi-Foam E-84, Class 1 Two-Component Kits, These kits contain flame retardants in order to meet the testing requirements of ASTM E-84, with a flame spread of 25 or less and a smoke-developed rating of 450 or less, , The flame-resistance rating meets the building code requirements for Class 1 materials, , No ignition barrier is needed, , Ideal for flash and batt or hybrid insulation systems, Product Note - Handi-Foam products are intended for professional use only, SKU: FRMTK2740