Review on 🔍 Premium Filters for Shark APEX UpLight Vacuum Cleaner - 4 Pack Foam & Felt Filters, 1 Pre-Motor Filter & 1 Post-Motor Hepa Filter. Compatible with LZ600, LZ601, LZ602 & LZ602C. Compare to Part # XFFLZ600 & XHFFC600 by Wendy Amorina

Pre-filter doesn't seat with that reassuring click like the OEM. So while the entire block (pre-filter and foam filter) doesn't seem to "rattle", I am concerned that this apparent lack of sealing could reduce engine life. (Also, the hot glue seal on the HEPA filter was clumpy, but it appears to have been sealed.)