Sound rated variable closer clamp that may be installed as a standard "2-Hole" pipe clamp to flat surfaces, to Holdrite® EZ-Strut™ or Stout Bracket® with 1 or 2-screws (for maximum load) or to flat surfaces by using 2 @ 1/4 in hammer-set or other anchors. Two acoustical and vibration, while allowing normal pipe expansion and contraction. Variable closure clamp supports 1 to 2 in CTS and IPS pipe sizes. Supports Copper, PEC, CPVC tubing, conduit, etc. Frame complies with UL94V-2 fire rating.