Comparison : Item # RH 20B, 1 1/2 Inch (in) Hose Size Cold Rolled Zinc Plated Steel Type RH Round Hole Strainer
Item # RH 25B, 2 Inch (in) Hose Size Cold Rolled Zinc Plated Steel Type RH Round Hole Strainer
Item # RH 30B, 2 1/2 Inch (in) Hose Size Cold Rolled Zinc Plated Steel Type RH Round Hole Strainer
Item # RH 35B, 3 Inch (in) Hose Size Cold Rolled Zinc Plated Steel Type RH Round Hole Strainer
Item # RH 40B, 4 Inch (in) Hose Size Cold Rolled Zinc Plated Steel Type RH Round Hole Strainer