Morton Salt WAVES water softener salt bars are the new, convenient way to maintain your home's water softener system. It's the same Morton Clean and Protect Plus Rust Defense water softener salt you trust, now in a more compact form. Morton WAVES lightweight 20 lbs. 4-count bars are easy to carry from store to home. Each 5 lbs. bar is easy to grip and place into your water softener, taking the hassle out of filling your water softener. The compact Morton WAVES packs are stackable so you can effortlessly store in your home. WAVES bars are compatible with most water softener systems and you can transition to bars even if salt pellets are still in your water softener from your last top-off. To maintain soft water in your home, the average household will use two, 20 lbs. WAVES packs every month. As an added time saver order online for home delivery or store pickup.. Features: Rust dissolving additives. Pack Size: 1. Product Weight (lb.): 20.125 lb. Returnable: 90-Day. Salt Form: Salt Blocks. Salt Type: Sodium Chloride. Texture/form: Block. Product Depth (in.): 5.625 in. Product Height (in.): 7.75 in. Product Width (in.): 8.5 in. Salt Type: Sodium Chloride. Pack Size: 1. Features: Rust dissolving additives. Texture/form: Block.