is replaced with uncoated open cell foam 24 this would be particularly suitable for uses in which the presence of fiberglass would not be satisfactory for the intended use or would be unacceptable to the intended client for example pharmaceutical companies involved in ingestible or injectable drugs would find it unacceptable to have any fiberglass in the air handler alternative embodiments of the second uncoated embodiment include uncoated open cell foam 24 secured by perforated rigid facing 26 fig3 uncoated open cell foam 24 secured in a frame 30 fig3 the present invention also includes a method for making an air handler using the uncoated third embodiment the method includes the steps of providing an air handler system with at least one air handler surface and open cell foam the method also includes the step of covering at least partially the at least one air handler surface with the open cell foam the present invention is directed to the use of open cell foam in air handlers that has the necessary durability safety and cleanliness properties for the particular use one exemplary open cell foam melamine foam melamine u2014 formaldehyde polycondensate has been shown to be quite suitable for this purpose melamine is a lightweight high temperature resistant open cell foam that has excellent thermal properties with superior sound absorption capabilities melamine is cleanable in that it is relatively impervious to chemicals e g it is able to withstand relatively caustic cleaning agents such as spor klenz u00ae without breaking down melamine also meets the flame spread smoke density and fuel contribution requirements necessary to comply with class i building code regulations because it does not shed particles it can be used in places where fiberglass would.