32/36 Weber carburator is a unit that works vertically(known as downdraft weber), and has 2 throtles, one primary(opens first)... and a secondary one (opens later at higher RPM.). Each throatle has a flap, or valve, the first one is a 32 size, the second is a 36 size. There is another vertical (downdraft) weber carburator, the 38 syncro, in which the flaps open both at the same time, syncronized. DCOE weber carburators are sidedraft (horizontal) in operation. The vertical or horizontal(downdraft or sidedraft) terminology is in reference to its position on the manifold(intake manifold), the downdraft sits on the stock manifold(same as the stock carburator)and has an air/gas vertical flow into the intake manifoold.... wheras the sidedraft has its own manifold(not the stock one) which acts as bridge between the cylinder head intake ports and the sidedraft carburator, which allows a horizontal flow of gas/air into the intake manifold.
I do not know if you already knew this, just trying to help in case you did not have this idea straight, if you do, do not take me wrong, just trying to help out.
Jaime