The company produces mechanical, air-powered and hydraulic dock levellers, seals and shelter as well as safety equipment and aftermarket parts and accessories.
Wynnchurch bought the business through an MBO in 2006, as part of a corporate carve-out from SPX Corp.
Firm president John Hatherly said, “We are very satisfied with the successful sale of 4Front to ASSA ABLOY, where we trust the company will continue its history of profitable growth under the leadership of Keith Moore and his team.”
Wynnchurch closed its third buyout fund on $603m in 2011, beating its $500m target.
That fundraise came six years after the close of its $350m second vehicle, and brought its total capital commitments to $1.1bn.
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