GLS Audio 24 Hole Rack Patch Panel SWP-24XLR-GLS Two Double Space 2U Black Powder Coat Finish. Industry Standard 19" width - 3.5" height. Sturdy 4mm thick construction - Does NOT bend like other brands. 24 hole design provides plenty of diversity. Works perfect with GLS Audio XLR, Neutrik and Locking 1/4" panels.