The Max-E-Pro® pump has our new Quick-Lock™ Trap Cover Ring and the 2 in. ports incorporate internal and external threads. It's available in single and two speed models, with ratings from 1/2 to 3 HP and built with quality construction using a durable one piece pump housing constructed of industry leading glass-reinforced composite resin. The pump is fast cleaning with a new Quick-Lock trap cover ring that permits fast access to strainer basket. Its large see-through lid makes it simple to check for debris. It has a strong, sturdy, specially designed base that dampens sound and vibration, making the Max-E-Pro® pump one of the quietest pumps in its class.