Promaspray P300®

PROMASPRAY® P300 is a spray or trowel applied, single package factory controlled premix, based on vermiculite and gypsum, for internal use.  PROMASPRAY® P300 is a lightweight coating that provides very efficient fire resistance with minimal thickness to return air plenums and air handling ductwork.   Promat’s other system to fire rate duct work makes use of their PROMATECT® L500 single layer board system.