Sleeper Extenders For 2012+ Mack CH models. Plain, no lights. Sold in pairs. Add to wishlist Part # : 3281-MSS226 Categories: Mack, Sleeper Extenders Tag: mack sleeper extender ❮ ❯ Product Information Product Information For 2012+ Mack CH models with extenders. Plain – no lights. Attaches using supplied hardware. Sold in pairs. For ordering or pricing information, please visit your local Mack dealership. II3M-2