Zurn Z888 Hi-Cap Drains

Request Quote Now

Zurn Z888-18Zurn’s Z888 Hi Capacity Slot Drains are designed to combat heavy runoff from exterior applications such as parking lots, airports, highways and more.

Built for large scale drainage, the combination of features in Z888 slot drains lets them whisk water away.  A smooth channel interior with no angular edges prevents debris from building up in the system.  Z888’s linear low density polyethylene (LLDPE) material keeps it water tight; liquids end up in the drain, not in the channel walls.

Slot opening is 1.75 inches wide with optional cleanout sections for maintenance.

Zurn on SaleClick to see our Z-888-18 Sale Special

Zurn Z888-12 Zurn Z888-18 Zurn Z888-36
1.75" Throat 1.75" Throat 1.75" Throat
12" wide (ID) 12" wide (ID) 23" wide (ID)
14.25" deep (ID) 21" deep (ID) 31" deep (ID)
3.609 gpf 9.2475 gpf 23.238 gpf
view cut sheet view cut sheet view cut sheet
Z888 exploded view

Z888 Hi-cap stepped fall transitionStepped Fall Transitions

The Z888 System offers three channel sizes based on flow expectation: the Z888-12, Z888-18 and the Z888-36 channels.  Build a non-sloped run of slot drain or use a Transition Connection to create a stepped fall toward the end outlet.

Each 2 meter (80”) channel connects together via a mechanical overlap, making installation quick and simple.  Rebar clips along the channel walls hold the system in place during concrete pour.  An integral “Zip Strip” keeps the 1.75” wide throat shut, preventing debris and concrete slurry from entering the drainage system during installation.

Z888 Pre-sloped frameBuilding a Slope

Z888 Hi-Capacity Slot Drains feature neutral channels, but that doesn’t stop them from capturing high volumes of water.  Along with transitioning between the Z888-12, Z888-18 and Z888-36 channels for a stepped fall, contractors can add a pre-sloped frame for added durability and efficiency.

To further increase the Z888 Hi-Cap’s flow rate, grade the subsurface at a slope up to 1% before installing the slot drain system. This increases CFS from 2.18 in the Z888-18 Series to as much as 6.90 CFS.


The Z889 High Capacity Cleanout Port fits the Z88-12-18-36 Series slot drains.  At 24" long, the cleanout offers pedestrian, FAA and H-20 grates to accommodate any load class requirement.

Zurn Z889 Hi-Capacity Cleanout Ports for Z888 Slotdrain

Use the Z889 Cleanout Port in longer slot drain runs to enable easy maintenance and a lasting drainage system.

Why Pick Z888 Hi-Cap

  • 2 meter channels make installation faster
  • Rebar clips distribute load weight for a stronger system
  • Optional heavy-duty frame adds drainage efficiency
  • Zip Strip keeps installation clean, easily managed
Got a question? Call Trench Drain Systems