A possible source within the US would be e.g. GREENLEE TEXTRON (US# 1-800-435-0786, greenlee.textron.com) Various rack equipment manufactures and also most Neutrik distributors do offer as well panels with D size cutouts.
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A possible source within the US would be e.g. GREENLEE TEXTRON (US# 1-800-435-0786, greenlee.textron.com) Various rack equipment manufactures and also most Neutrik distributors do offer as well panels with D size cutouts.