This item does NOT come with installation or operating instructions. Support rings come in a variety of sizes and heights! This original LG Microwave Turntable Roller Ring originally shipped with the following LG devices: MV1840ASDL, MV-1840ASDL, LMHM2017SB, LMH2016SW This is a true LG part! This item is NEW! Don't see your model number? Send us a message as we are happy to help!

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