noun, noun which may take the genitive case particle 'no'
ready-made; off-the-shelf
Describes manufactured goods that are mass-produced and available for immediate purchase, as opposed to custom-made or tailored items. Commonly used with clothing, furniture, and other consumer products.
既製のスーツを買うほうが安い。
It's cheaper to buy a ready-made suit.
この棚は既製品なので
This shelf is an off-the-shelf product, so it will be delivered right away.