specification:

Part number: U302500F16

Name: Y filter, In-line mesh strainer

Color: transparent

Material: PVC

Package: 1pc/bag

weight: 238g

https://xtralis.com/file/11716

In some areas of the world, there are very tiny mosquito insects measuring about 0.9mm x 0.1mm that can burrow through filter materials within the smoke detector and reach the detection chamber, which may then cause F840 of VESDA-E smoke detectors. Insect infestation of this type is a rare site-specific condition and is not applicable to most indoor installation sites. To protect Xtralis detectors from these tiny insects, this Application Note describes the addition of an inline mesh strainer after the in-line filter as an application solution for affected sites. This practice adds maintenance to the installed system and therefore is only advised where this type of insect infestation is likely.