1. Easy & simple to clean & change.
2. Easy to install, no need to remove fan or guard.
3. Decreasing noise level while creating low air restriction.
1. Material guard: palastic UL 94V-0/media: PU foam 30 PPI. 2. Size: 94mm x 94mm. 3. Height 4.5mm +/- 0.2mm. 4. Hole diameter 4.5mm.