Why opt for ROCKWOOL methods? ROCKWOOL answers for ductwork fire protection are already formulated and tested based on the most up-to-date European fire security specifications two. ROCKWOOL fire duct remedies are fully examined for fire resistance and can provide around 2hrs fire security. We offer various fire rated ductwork products https://elliottskznb.thelateblog.com/29535469/5-simple-statements-about-cibse-explained