These frames are produced by E.H. Thorne and flat-packed for self-assembly (includes pins)
- Pack of 10 frames.
S.N.1 frames are used in National or WBC supers.
Identical to D.N.1 frames but have the shallow side bars for supers
- Top bar- 17" x 7/8" (431mm x 22mm)
- Side bar- 51/2" x 7/8" (140mm x 22mm)
- Bottom bar- 14" (356mm)