These heavy duty commercial grade reservoirs will last for years! They are made with a high quality FDA approved, UV protected plastic to ensure uniform thickness and strength for maximum durability and longevity. One piece construction with rounded edges. Five year warranty. Made in the USA. Dimensions: 35 Gallon : 38 in x 28.5 in x 13 in. 11 lbs 55 Gallon : 52.5 in x 29 in x 14 in. 24 lbs. 100 Gallon : 53 in x 33 in x 24 in. 33 lbs.