The invention provides a process for reducing the amount of monomeric polyisocyanate in a composition comprising a polymer or oligomer bearing isocyanate groups, the method comprising reacting the composition with a quenching agent, the quenching agent comprising an arylalkyl alcohol and an alkoxysilane bearing a secondary amino group. A sealed front panel mounts on the front side of the wall or door, and is exposed to the harsh environment while the computer components mount on shelves that are located on the back side of the wall or door. A plurality of points i,j are identified and a magnitude si,j is calculated for each point based on \u03b1, i and j.