Abstract: A fill support grid hanger for hanging a full support grid from a horizontal structural member that obviates the need for an intervening spacer bar. The hanger features a flange at the top, a plurality of blocks in the back to stabilize the hanger on the horizontal structural member, and three-dimensional features on the front side to receive and prevent lateral movement of two or more different types of fill support grids.

Abstract: A fill support grid hanger for hanging a full support grid from a horizontal structural member that obviates the need for an intervening spacer bar. The hanger features a flange at the top, a plurality of blocks in the back to stabilize the hanger on the horizontal structural member, and three-dimensional features on the front side to receive and prevent lateral movement of two or more different types of fill support grids.

Abstract: A fire resistant industrial water cooling tower (20) is disclosed having normally closed passive vent structure (28) which vents the interior of the tower (20) above the area which is undergoing combustion to enhance suppression of the fire. The vent area is dependent upon the location and extent of the fire. The vent structure (28) comprises means presenting a series of vent openings which are closed by a component (88) that responds to flames and/or hot products of combustion to move out of blocking relationship to the opening thus venting the interior of the tower. In preferred embodiments, the vent includes a panel member (82) having a series of openings (83) therein which are either covered or blocked by a synthetic resin member (88) formed of a material which will burn and has a relatively low melt temperature thereby causing the material to either burn or rapidly melt when subjected to flames and/or hot products of combustion resulting from a fire in a part of the tower.