Description:_x000D_1. Easy to install and remove._x000D_2. Compatible for IROBOT Roomba 7 series 700 sweeper 760/770/780/790 and other models._x000D_3. Function and features: protect the motor in all directions, prevent dust from entering the vent and avoid secondary air pollution._x000D_4. Replacement cycle: in order for the Roomba to work more efficiently, it is usually recommended to replace the filter within three to four months. Because the holes in the filter will slowly block as the number of uses increases. Once blocked, the air resistance increases and the service life shorten, causing dust around the filter to enter the machine from the air gaps. The board will be severely damaged, so be careful to replace the filter in time._x000D_Specification:_x000D_Weight: 15g_x000D_Size: 65*45*19mm_x000D_Note: This accessory kit is a replacement accessory, not an original product. For this product, use iRobot brand name, model or component name only to prove compatibility._x000D_ Package List:_x000D_Choice 1:_x000D_6pcs x Filters _x000D_Choice 2:_x000D_12pcs x Filters_x000D_