Väliekraan
Väliekraan is a term often encountered in discussions related to ventilation systems, particularly in buildings. It refers to an intermediate screen or filter used within a ventilation duct. The primary purpose of a väliekraan is to capture larger particles of dust, debris, or other airborne contaminants before they reach more sensitive components of the ventilation system, such as fans, coils, or finer filters. This pre-filtration helps to extend the lifespan and maintain the efficiency of these downstream elements.
These intermediate screens are typically made of durable materials like metal mesh or coarse synthetic fibers,