ClearSonic SL8466 4-Section SORBER LidPacThe SL8466 is the largest SORBER LidPac from ClearSonic and includes four Sorber absorption panels and two support bars for stability. The LidPac is supported in front by resting on top of the acrylic drum shield panels and in the rear by resting on the support bars. There are two center rectangular panels, measuring 2 W x 5. 5 L and 1 W x 5. 5 L, and two outside angled panels measuring 2 W x 5. 5 L that altogether provide 7 of width coverage by 5. 5