[compatible model] This replacement filter fits for Milwaukee M18 3-in-1 Backpack Vacuums 0885-20 & 0885-21HD, Compare to part# 49-90-1963 [durable material] Our filters are made of high-quality materials and are perfect for your vacuum cleaner [features] Easy to clean and install, hepa filter suitable for kitchens, living rooms, study rooms, and any outdoor areas that require it. [fine dust collection] This filter can capture 99.97% of particles larger than 0.3 Micrometres for fine dust collection. Its powerful adsorption ability can filter out the vacuum in the corners of the room, giving us a comfortable environment Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:As Shown Material:Plastic Package Contents: 2 * HEPA filter 49-90-1963 Only the above package content, other products are not included. Note: Light reflection 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.