THE MOST EFFECTIVE NOISE & VIBRATION REDUCING MOUNT ON THE MARKET TODAY * PERFECT FOR LOW CEILINGS - BAG CHAIN ATTACHES 1.5" FROM CEILING * DESIGNED FOR CEILING JOIST 16" ON CENTERS - 24" ON CENTER EXTENSIONS AVAILABLE * MADE FROM 3/16" ALL STEEL CONSTRUCTION - ALL MOUNTING HARDWARE INCLUDED * MADE IN PENNSYLVANIA -- SEE THE GS IN ACTION HERE - http://www.youtube.com/watch?v=qZOs4Aq9YuM