Use to add aftermarket speakers to factory door location. Front 6x9 and rear 6/6.5/6.75". Made specifically for most 6", 6.5", and 6.75" speakers. Speeds up installation time. Made from high grade plastic for a long lasting secure fit and corrosion resistance. Slight modification of the speaker adapter is required for some speakers- that's normal and that's why these fit so many different sizes. Includes 1 pair each for 4 doors- 4 plates and 4 speaker harnesses. Compatible vehicles: Made for Ford: 2018 2019 2020 2021 2022 2023 2024 Expedition, 2020-2024 Explorer