Sparky,
Why do you need a closeable cover?
What is the corrosive atmosphere?
You've got me confused with this one. I see these things all the time in finished basements and have never seen one that was not sealed or couldn't be just plugged in.
Maybe we're not talking about the same thing?
I've heard them called 'Ejection Pumps' here.
Bill
[This message has been edited by Bill Addiss (edited 01-10-2002).]
