Assertion: filter | /r/HasProperty | small
Facets:
value: usually
type: DEGREE
Source sentences:
text: These filters are usually small, portable and lightweight (1-2 pounds/0.5-1.0 kg or less), and usually filter water by working a mechanical hand pump, although some use a siphon drip system to force water through while others are built into water bottles.
text: Digital Subscriber Line ( DSL ) filters, also known as micro-filters, are small in-line devices sometimes required for DSL installations.
text: A filter that is too small or otherwise inadequate may be ineffective in a situation, even if it has high efficiency, whether true HEPA or HEPA-like.
text: However, filters are typically not effective against viruses since they are small enough to pass through to the "clean" side of the filter.