Plastic Speaker Tophat. 35mm Hole Diameter. 118mm Flange. 45mm Hole Cutting Hole RequiredAccepts Pole Size: 35mm Flange Diameter: 118mm Depth: 72mm Hole Cut Size: 45mm Weight: 105g. A plastic internal fitting for mounting loudspeaker cabinets directly on to 35mm stands and poles. It requires a 45mm diameter hole in the cabinet and fits a 35mm diameter pole. Plastic construction with black finish and four fixing screws. The diameter of the flange is 118mm.. loudspeaker tophat-speaker tophat-speaker stand tophat