Detail 01
The 16 in the name
The number is cup diameter. The 16 sits between the 15 (17.12mm) and the 17 (17.33mm) — medium-large.

Independent shopping perspective
Medium-large trumpet mouthpiece with a C cup, on Schilke's standard blank. For players who want cup volume and tone over upper-register help.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
The number is cup diameter. The 16 sits between the 15 (17.12mm) and the 17 (17.33mm) — medium-large.
Detail 02
Medium depth. Cup volume is what builds tone, so this fills out the sound instead of easing the top of the range.
Detail 03
Not the standard 3 or the semi-flat 4. A different contour, so the feel on the lip won't match the common Schilke rims.
Detail 04
The lighter body. The Heavyweight version of a comparable cup runs roughly $50 more for the same dimensions.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
16 is the cup diameter, C is the cup depth, 2 is the rim contour. Higher diameter numbers are wider: the 13 is 16.89mm, the 20 is 17.78mm.
No. The C cup is built for volume of tone. Schilke's upper-register pieces are the shallow A cups with tight a-backbores, like the 14A4a and 13A4a.
Dimensions are the same either way, so it comes down to blank weight and about $50. Start with the Standard unless you already know you want the heavier piece.
It's wider than the 13, which is the student and developing-player size, and the C cup gives more tone volume. Expect an adjustment period on the wider diameter.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.