Fits most louver type RV range vents such as Atwood, Wedgewood, Magic Chef and Suburban easy-to-install screens minimal airflow restriction ensures that your vents stay free from costly invasion by unwanted pests (nesting insects, birds and rodents) heavy duty stainless steel mesh cover includes installation tool and two spring fasteners screen measures 4.2″ x 11″ x 1.3″ screens must be inspected monthly and cleaned when necessary to maintain proper air flow.