honeywell - popup2400 popup air filter 16" x 28" x 6" merv 11 - 2 pack honeywell honeywell popup2400 popup pleated filter, 16" x 28" x 5", merv 11 - 2 pack <br /> <br />no assembly required!! tired of pleat spacers and end caps? try the honeywell popup filter and be pleasantly surprised at the ease of use. stores flat for space saving convenience until ready to use! <br /> <br />this popup filter fits the honeywell space-guard 2400. <br /> <br />replace the filter every 6 to 12 months. <br /> <br />filter measures 16" x 28" x 5" <br /> <br />since 1885 honeywell has been providing customers with cutting-edge technology in the home comfort industry. from the first thermostat to today's innovative indoor air quality products, honeywell continues to be a leader in the home comfort market.