NCCER Fiberglass and Flexible Duct Systems (03214) Certification Exam

NCCER Fiberglass and Flexible Duct Systems (03214) Fiberglass and flexible ductwork requires a hands-on grasp of material properties that rigid systems don’t demand? compression ratios, vapor barriers, and R-value optimization all shift when working with flexible media. This exam zeroes in on those unique challenges proper support spacing to prevent sagging, sealing techniques that account for material flexibility, and installation methods that differ sharply from traditional metallic ducts. NCCER’s 03214 drills into these distinctions so you’re not applying rigid-duct logic to a fundamentally different application.