What is the wheel size of a 16" Treck 3900 mountain bike?

I have a Trek 4400 with a 16'' frame, its 26'' for sure.

Uhm, the website i'm on tells me this:
Alloy front, Shimano RM30 rear hub; Matrix 550 rims
My "WWW." bar has disappeared so i can't type the URL :S
Sorry if it doesn't work :]
http://www.bayviewcycle.com/newfiles/bik...
At a guess 16"
I would say 16"
The wheels will be 26".

Tyre size is 26"x2.0. on Matrix 550 rims (probably)

http://www.bicycledoctor.co.uk/p_trek390...
I was a cycle mechanic

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Kids Bike Schwinn Bike Cruiser Bike Road Bike Folding Bike Mountain Bike

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