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The OD 4400 has been replaced by the HD 4470.
The HD4470 comb opener will open comb elements from ¼ inch to 2 inch. The HD4470 can open up to 21 element combs for documents up to 14 inches long. The HD4470 will mount on any vertical Rhin-O-Tuff OD or HD punch (optional mounting kit available).
Will bind up to 2 inches (51 mm) thick and 14 inches (356 mm) Wide.
The opener has an adjustable ring opener control for repeatable comb opening positions.