It looks like Cabinet, Poisonmaker's.
You can sometimes buy it or plans for it at guild traders, or buy the plans for it with writ vouchers from either Rolis or Faustina (I forget which one has it now), where you turn your master writs in.
Also, they are doing bundles now, so it maybe included in Crafters Furnishing Folio rather than sold individually if you buy it with writ vouchers.