The slides are a littler longer than 11.5 inches. Please be sure to inform me if you have the slides or the black little object behind them.
Tom from SWISCO responded:
April 2, 2018
Our 32-056 is 11-5/8" long. Could this work for you? As for the black spacer, we have something that may work though it would depend on your size. See our 32-334 and 32-339 to start out.