Hi enforcer and thanks for being a part of the forum, I just did a search of the archives in http://www.t-nation.com for you and came up with 2 great articles by Thibaudeau for you to consult, he states that the Iron Woody bands provide the following poundage:
No 1. 5 – 35 (all numbers are in pounds)
No 2. 10 – 50
No 3. 25 – 80
No 4. 50 – 120
No 5. 60 – 150
Please refer to:
Band Training for Big Gains and Rubber v Iron
cheers, ashley