I have had 4 panels floating around my below floor storage and spare tire area, Can’t recall their purpose or location. 3 panels are about 6”x18” and 1 is more like 6”x12”. 1 of the longer ones has Velcro down the ends and 1 has Velcro down the sides. Where do they go? Also have a ridgid plastic divider that has several slots cut out and is maybe 4”x24”.