M: ok. another question about English, ok?
U: ok
M: Extra-Small: 5-1/2 in. x 5-1/2 in. x 5-1/2 in
here, 5 minus 0.5 in?
M: or 5 plus 0.5 in?
U: what?
U: inches
M: it’s the size
U: or 5-1/2″
M: I wonder what it means by “5-1/2”
U: “
U: inch sign = “
M: it means 5.5 in? or 4.5?
M: I wonder what it means by “-” between those two numbers
U: 5.5 inches  = 5 1/2″
M: the link
M: here there is a “-” between them
U: 5″ is between those two numbers
U: Available in 5 convenient sizes:
Extra-Small: 5-1/2 in. x 5-1/2 in. x 5-1/2 in
Small: 11 in. x 8-1/2 in. x 2-1/2 in.
Medium: 11-7/8 in. x 8-1/2 in. x 5 in
Large: 15 in. x 12 in. x 3-3/4 in.
Extra-Large: 15-3/4 in. x 12 in. x 8-1/2 in.
U: what exactly is the question?
M: what does it means by “-” here?
M: minus or plus?
U: i don’t see that
M: how come
M: Extra-Small: 5-1/2 in. x 5-1/2 in. x 5-1/2 in.
it’s between 5 and 1/2in.
U: its probably just a dash mark to separate words or numbers
M: oh, i c
M: tks  
U: yes…it means nothing…just to separate the numbers
M: I see.
U: just someone’s way of doing it
M:
U: the correct way is 5 1/2″ X 5 1/2″
U: must be canadian
M:  
U: or even better would be 5.5″ X 5.5″
M: oh, i c.