sec_4_1_2__para
Particulate filters must have a minimum diameter of 47 mm (37 mm stain diameter). Larger diameter filters are acceptable (Section 4.1.5).
← 4.1.2. Filter size · All articles · 4.1.3. Primary and back-up filters →
Source: EUR-Lex (Cellar) · retrieved 2026-11-01 · Text as adopted (Official Journal); later amendments are not incorporated in this text.