An improved method and apparatus for imparting a smooth surface to gypsum fiber panels. The control module includes a remote sensing module that communicates remotely with one of the battery packs. In the assembled state, the three elements form a table lamp or a floor lamp based on dimensions. The expected area associated with each transmitter is indicative of an area where the terminal is likely to be located given that the signal from the transmitter is received by the terminal. A needle penetrable and thermally resealable second material portion either overlies the first material portion and cannot contact any product within the storage chamber, or forms a substantially lesser surface area overlying the storage chamber that can contact any product therein in comparison to the first material portion.