Zehnder Rectangular Grille Housing CSB-P 400 Filters, ISO Coarse (G3), 10 pcs

For use with the CSB-P grille housing.  The filter removes particulates before they enter the ductwork and is quick and easy to insert or replace.  ISO Coarse <55% (G3) filter grade. 32mm high x 342mm wide x 55mm deep.