REF#: ATO111 ATO Reservoir (Narrow Fit Version) 12 Different Sizes Sumps 12x12x12" - 2 compartments (Skimmer

12x12x12" -  2 compartments (Skimmer Section 6"x13

25" and the Return Section at 9"x17

Baffle/water height is 8"

18x20x20 - 31 Gal

REF#: ATO111 ATO Reservoir (Narrow Fit Version) 12 Different Sizes Sumps 12x12x12" - 2 compartments (Skimmer3"x12"x12" 1. 75 Gal 3"x16"x16" 3. 25 Gal 3"x20"x20" 5 Gal 3"x24"x24" 7. 75 Gal (3 8" thick) 4"x12"x12" 2. 5 Gal 4"x16"x16" 4. 25 Gal 4'x20"x20" 6. 75 Gal 4"x24"x24" 10 Gal (Pictured) (3 8" thick) 5"x12"x12" 3 Gal 5"x16"x16" 5. 5 Gal 5"x20"x20" 8. 5 Gal 5"x24"x24" 12. 25 Gal (3 8" thick) View able front window for water level check Made with 1 4" cast acrylic (Black), only the 24 tall is 3 8" thick Hinged flip top lid 1. 375" hole on top to run pump