UltraTech Containment Sump 1000: With 3 4" Drain 2831 Operation Type Push Button 3 point contact and support 3 point contact and support across the width of the ramp and a tab that inserts into the keepers preventing lateral movement of the ramp during use Each Bollard comes equipped with a Poly Base that can be anchored to the ground Meets Stormwater Contains 1000 gallon fuel tanks1 piece molded polyethylene design will not rust or corrodeNestable design saves freight and minimizes storage spaceOptional 3 4 drain fitting available allows use with Ultra SelfBailer2 drain fitting also availableUse with optional Ultra Self Bailer (Part# 9935) for outdoor containment Self Bailer allows clean stormwater to passively drain from sump while capturing hydrocarbons