You can expand your search to seeing what is in "all CUNY" libraries, yet the example below shows when you just search for a print book that is on the shelves at Hunter's libraries. Also note this example shows a book that is at the Silberman campus, on E 119 and Third Avenue.
As long as it's a "regular loan" book that is in the "stacks" (the shelves), you can request a print book from another CUNY library.
Note the call number (the location of the book) and look up where the first letter (H, in this case) corresponds to the floor maps in the library. Be sure the location corresponds with the branch library (Cooperman; Silberman; Zabar Art Library; Health Professions Library).
For info about other CUNY libraries, go here.