A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
XH – Extra Heavy
XL – Extra Large
XLG – Extra Long
XS – Extra Small
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
Source: “Plumbing Terms” Standard Plumbing Supply. 11 Sept. 2008