Economical...yes. Cheap...no. Our SILVER filter features the benefits of our more expensive filters. They are permanent, washable and electrostatic. We have sold this filter to hundreds of thousands of happy customers. It is one of the most popular electrostatic filters on the market today. Our SILVER filters are made from a single piece of roll-formed galvanized steel fastened together at one corner with a single rivet. They feature the same lifetime warranty as our most expensive filters. How do you install it? Simply take out your old disposable filter and drop this one in it's place...you're done. How do you clean it? I vacuum mine off every 30-45 days and wash it with a hose or with the shower head every 3 months or so. You can also blow it out with an air compressor.