I put my faucet shanks centered at 12 inches above the drip tray, this puts the tip of the faucet 10 inches above the drip tray and leaves me ample room to fill my standard sized glass pitchers (9" tall) without a problem. Growlers are generally about that size, but then you have to take into account what kind of attachment you're adding to your faucet to add the growler filler. I use intertaps and haven't had a problem.