Shop Nilight in-Channel Rain Guards for 1996-2025 Chevrolet Express Van/GMC Savana Vent Window Visors 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025, Original Window Deflectors-2PCS in high quality, support 2-year warranty. Nilight window deflectors are great for all weather conditions,help improve ventilation inside and outside your car to reduce mirror and window fogging while increasing air circulation.