As far as I know there is no universal standard width for kitchen drawers, or for cutlery trays either. So if you want a tray that will fit the width of a drawer perfectly, you will either have to get lucky and find one that is the right size, you could have one made to measure, or you could can get an expandable tray. The advantage of the latter is that you can eventually use it in another drawer, should the need arise.
Bamboo expandable cutlery tray:
Bamboo expandable cutlery tray pictured: Totally Bamboo Expandable Cutlery Tray
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