Products

Dogbone Style Island Form

Part Number: DB(width)(radius)-(length) All CNI's Island forms are made to order and are non returnable.

Straight Section Island Form with Radius Ends

Part Number: IS(width)(radius)-(length) All CNI's Island forms are made to order and are non returnable.  

Water-Tight Sump Bladder Kit

NI = New Installation Part Number Legend: Manhole Part Size Top Hat Sump Size 36"      33"       34" Includes: Bladder, Expansion

Nipple Extension

2 1/2″ Riser Offset

4″ Riser Offset

Waste Oil Funnel Containment with Round Flange

All Manholes are manufactured water tight and H20 traffic weight rated unless otherwise specified

Snap Tight Fil-Spil Containment Boxes

Ductile Iron Ring(Cam-lok style) Two Door 36" Dia 42" Dia 48" Dia No Containment 3601 4201 4801 5 Gallon Containment 3602 4202 4802 (2) 5

Rain Tight Fil-Spil Containment Boxes

Rolled Steel Ring(Direct bolt down style) Two Door 36" Dia 42" Dia 48" Dia No Containment 3701 4301 4901 5 Gallon Containment 3702 4302 4902

Gravity Cover Direct Bury Stand Alone Containment

Vapor Side Features Durable cast to prevent corrosion. 4" Female standard pipe thread. All Manholes are manufactured water tight and H20 traffic weight rated unless