FOR SALE IS ONE (1) NEW AIR CONDITIONER REPLACEMENT FOAM FILTER BY DUCK BRAND MPN 1285234 UPC# 075353090992. FITS ONE WINDOW AIR CONDITIONING UNIT AND MANY PORTABLE UNITS, MEASURES 24" wide x 15" tall x 1/4" THICK (large enough for ANY window ac unit and easily trims to size), DARK GRAY POLYURETHANE FOAM CONSTRUCTION EASILY TRIMS TO SIZE WITH SCISSORS. SEVERAL CUSTOMERS HAVE USED THIS FILTER FOR OTHER APPLICATIONS LIKE DEHUMIDIFIER, AIR PURIFIER, COMPUTER, REAR OF HEATER OR FAN, ANYWHERE WHERE BASIC FILTRATION IS REQUIRED. PLACE THIS FILTER OVER A HVAC INTAKE DUCT FOR INITIAL FILTRATION OF LARGER CONTAMINANTS. THIS HOME SMART REPLACEMENT FILTER WILL ELIMINATE DUST AND POLLEN FROM THE AIR, WASHABLE WITH WARM SOAPY WATER AND REUSABLE, INSTALLS IN MINUTES. IF YOUR CURRENT AC FILTER IS FALLING APART OR SELF-DESTRUCTS WHEN YOU TRY TO CLEAN IT, IT IS TIME TO REPLACE THE FILTER. YOUR AIR CONDITIONER WILL FUNCTION BETTER, MORE EFFICIENTLY AND LAST LONGER WHEN CONTAMINANTS ARE HELD BACK BY THIS QUALITY REPLACEMENT FIILTER. YOU WILL RECEIVE ONE (1) DUCK BRAND AIR CONDITIONER REPLACEMENT FILTER SHIPPED BY USPS MAIL..... note....your window or portable air conditioning filter is a vital (and inexpensive) component and should be inspected and cleaned very regularly. dust and other contaminants block the flow of air into your unit and prevent it from working at peak efficiency. most foam filters (the original filter or a replacement filter) will begin to fall apart after one or two seasons, disintegrating when you clean them with warm soapy water. that is a clear indication your filter needs replacing. failure to replacement your window ac filter will result in a rapid performance decline and the early death of your unit. this replacement filter from duck is a tad thicker (1/4" thick) than most original (oem) filters, and will likely perform a little better than your current filter. just place it over the old filter and trim to fit. also thoroughly clean and vacuum all parts (inside and outside) of your ac unit for best cooling performance. the efficient "flow" of air over and through the air conditioner fins is the key to a hi-performance window air conditioner unit. i also sell duck brand premium insulating window foam and side panels for window air conditioners..... go to my other items and search keyword DUCK BID AND BUY HERE IN IN ABSOLUTE CONFIDENCE SINCE I HAVE THOUSANDS OF POSITIVE FEEDBACK. I SHIP WITHIN TWO DAYS OF RECEIPT OF PAYMENT, OFTEN THE NEXT DAY. $3.81 USPS GREEN SHIPPING USING RECYCLED PACKAGING MATERIALS AND ENVIRONMENTALLY FRIENDLY MATERIALS TO ANYWHERE USA. I DO NOT SHIP ANYWHERE ELSE. HAVE A GREAT DAY AND THANK YOU FOR STOPPING BY.......