Replacement air filters made with high quality materials. [Applicable models] Adapt to the vacuum cleaner DJ63 Filters maintain robot's cleaning performance while reducing infiltration of dust, pollen and other into the air you breathe. For optimal performance of your vacuum, it is recommended that you replace your filter every 1-3 monthes. Size: Blue Sponge Filter: 160 x76mm () White Cotton Filter: 135x118x23mm () colour:blue & white Material:Sponge + plastic Package Contents: 1 x blue filter cotton 1 x white filter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.