Replacement Electrolux Central Vacuum Foam Filter - 2 Filter Pack Filter Measurements: 7 inches tall by 8 1/2 inches wide Fits Models: This filter fits both Electrolux and Aerus central vacuums except models CV3271B, CV3219, CV3291C, CV3391A and CV3391D Replace or clean every 30 days for best results and longevity of your central vacuum