Does LCN still sell closer body that has four corner mounting

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The LCN -16 and -17 corner brackets are obsolete and no longer available from LCN.
Because of the new extended LCN warranties and the desire to be consistent across the entire Allegion premium brands, LCN will be moving away from offering an out-of-warranty repair service beginni...
LCN does not recommend this type of installation, and has never sold a coupler to do this.
The 4040XP, 1260/1261, 1460/1461, 4030/4031 closers have the tri-pack mounting option when ordered with an Rw/PA or Hw/PA designation.