Finally the web site caught up, here was the sump I was describing:
http://www.marineland.com/sites/Marineland/products/productdetail.aspx?id=2054&cid=3071&mid=3226
High-Capacity Acrylic Sump Filtration Systems
High-Capacity Acrylic Sump Filtration Systems - The ultimate solution for big tank filtrationfor marine, freshwater and reef systems.
Created specifically to meet the demands of our new high-capacity Deep Dimension* Corner-Flo Aquariums, these sleek sumps are also an ideal match for standard-depth Corner-Flo tanks, as well as other brands of tanks and stands.
These sumps set a new design standard, with exclusive Marineland® features like:
New design fits easily in stand. The ultimate solution for big tank filtration.
Front loading easy-access media trays, plus patented high-capacity BIO-Wheel® (included; removable).
Flame-polished edges; unsurpassed quality throughout.
Dedicated chamber for Marine Series protein skimmer maintains constant water depth.
High volume of flow through sump helps minimize debris buildup on bottom.

http://www.marineland.com/sites/Marineland/products/productdetail.aspx?id=2054&cid=3071&mid=3226
High-Capacity Acrylic Sump Filtration Systems
High-Capacity Acrylic Sump Filtration Systems - The ultimate solution for big tank filtrationfor marine, freshwater and reef systems.
Created specifically to meet the demands of our new high-capacity Deep Dimension* Corner-Flo Aquariums, these sleek sumps are also an ideal match for standard-depth Corner-Flo tanks, as well as other brands of tanks and stands.
These sumps set a new design standard, with exclusive Marineland® features like:
New design fits easily in stand. The ultimate solution for big tank filtration.
Front loading easy-access media trays, plus patented high-capacity BIO-Wheel® (included; removable).
Flame-polished edges; unsurpassed quality throughout.
Dedicated chamber for Marine Series protein skimmer maintains constant water depth.
High volume of flow through sump helps minimize debris buildup on bottom.
