A.Y. McDonald introduces its DuraMAC Sump Pump line with rugged, durable thermoplastic models and tethered and vertical switches, available in 1/4, 3/10 and 1/3 HP. A 1/5 HP utility model is also available with no switch. All thermoplastic pumps come with a 3-yr. warranty. Cast Iron Sump Pumps are available in 3/10, 1/3 and 1/2 HP models with vertical or tethered switches. All cast iron models come with a 5-yr. warranty. A 1/3 HP EZ package comes pre-packaged with a 1/3 HP cast iron sump pump mounted on a base, with a check valve and discharge pipe also included.