This is a perfect HEPA air filter for any medium to large sized room.  It has a variable speed motor so you can turn it up to clean the air quickly and lower it when you need to. The sleek case is made of cold rolled steel, not plastic! it's available in white or jet black and will blend with any decor. By adding the optional activated carbon/zeolite canister the 2500 literally makes odors vanish! Now you can enjoy the true pleasure of breathing pure air.