1592953455000 1312632483000 term-52041 1616541336195 1312632546000 1616290592683 adlib fitz-online adlib-term-52041 8fe8d329-043e-36b4-b42e-2ac5cba37357 2 1 scope note Narrow boards placed at an angle in louvers. DAC reference term-52040 adlib-term-52040 f325b048-f146-3dd1-a719-cf6dfd7a5cd6 louver board V.PJ.AFU.ALO.ARI.ARI.ALO.ARI.ALO.AFU 1 code V.PJ.AFU.ALO.ARI.ARI.ALO.ARI.ALO.AFU 1 louver boards reference term-52034 adlib-term-52034 5db05900-02ba-34d1-b253-209c4f82c0cc <louver components> louver boards term