Crucial Air THF-15 Humidifier Filter HIGH QUALITY AIR FILTER that can replace your Lasko L115 Humidifier Filter. Get back to breathing clean air again! EASY TO INSTALL so you can get back to breathing clean air as soon as possible! Simply remove your old filter and put this brand new one in it's place! This filter is comparable to part # THF-15. HEALTHIER LIFESTYLE! No one wants to breathe in dirty air and if you don't clean your air filter that will be exactly what you'll be doing! Replacing your filter will help clean your air and allow for a healthier lifestyle! This filter fits Lasko models 1128, 1129, & 9930. SAVE MONEY by using a new air filter! When your Lasko L115 Humidifier has a clogged or dirty air filter it can cause it to work harder which will end up hurting your electric bill! This filter is approximately 8" x 11.5" x 1.5" inches. Designed & Engineered by Crucial Air