Rigid electric spa pump

means an end suction pump that does not contain an integrated basket strainer or require a basket strainer for operation as stated in manufacturer literature provided with the pump and that meets the following three criteria:

(A) is assembled with four through bolts that hold the motor rear endplate, rear bearing, rotor, front bearing, front endplate, and the bare pump together as an integral unit;

(B) is constructed with buttress threads at the inlet and discharge of the bare pump; and

(C) uses a casing or volute and connections constructed of a non-metallic material.