Refurbished 21.5-inch iMac 3.0GHz 6-core Intel Core i5 with Retina 4K display - Apple
Apple launches new Retina 4K 21.5-inch iMac, all 27-inch iMacs now feature Retina 5K displays - 9to5Mac
Apple 21.5" iMac with Retina 4K Display (Late 2015) MK452LL/A
Retina 4K LCD Display Assembly for iMac 21.5" A1418/A2116 (Mid 2017, Early 2019)
Apple revises iMac line, adds 21.5″ Retina 4K model – Six Colors
Apple 21.5" iMac® with Retina 4K display Intel Core i5 (3.0GHz) 8GB Memory 256GB SSD Silver MHK33LL/A - Best Buy
Refurbished 21.5-inch iMac 3.0GHz 6-core Intel Core i5 with Retina 4K display - Apple
Amazon.com: Kuzy Dust Cover for iMac 24 inch 2021 M1 A2438 A2439 - Computer Monitor Cover for Apple iMac 21 inch 2020-2017 Retina 4K - Dust Protection for Mac 21.5 Protective Screen and Accessories, Black : Electronics
Used Apple iMac 21.5-inch (Retina 4K) 3.0GHZ Quad Core i5 (Mid 2017) MNDY2LL/A - GainSaver