Rule Strainer Base f/Rule Mate 500-1100gph Pumps Replacement. Replacement Strainer Base Replacement Strainer Base f/Rule Mate Bilge Pumps Fits Pre-2009 Rule Mate Models RM500 RM750 & RM1100 Specifications for Rule Replacement Strainer Base f/Rule Mate 500-1100gph Pumps: Manufacturer: Rule Color: Black Features of Rule Replacement Strainer Base f/Rule Mate 500-1100gph Pumps Gallons Per Hour: 500-1100 Package Contents: Rule Replacement Strainer Base f/Rule Mate 500-1100gph Pumps Rule 285: Strainer Base f/Rule Mate 500-1100gph Pumps Replacement