Peerless-AV ACC050 Extension Column StabilizerThe ACC050, Extension Column Stabilizer, can be used to reduce unwanted swaying for installations involving extension columns. Two supports are provided to attach to any standard Peerless AV 1. 9 OD extension column. For use with 1 1 2" schedule 40 extension columns Reduces unwanted swaying that may occur with long or drop lengths Peerless AV ACC 050 Specs Type Column Stabilizer Construction Steel Compatible 1 1 2" Schedule 40 Extension Column