A hollow plastic member provided with end caps having holes therein through which wires can pass and be placed under tension so as to provide internal support for said member to reduce deflection of said member when a load is placed thereon and to return said member back within acceptable limits to its original position. On part of the wiring layer, a Ni layer is plated. The retainer locking arms include forward abutment surfaces in abutting relation with the tube upset and forward abutment surfaces in abutting relation with the sleeve. The power IC is configured to provide a plurality of clock signals for driving a gate driver of the LCD device, and adjust the effective pulse widths of the plurality of clock signals according to the thermal signal. A fourth embodiment includes filter media with the upstream sealing material recessed from the upstream edge for reducing effects from blockages at the upstream edge of the filter.