Pyle-Pro PH916 - Bolt-on Type Constant Directivity Horn (Discontinued by Manufacturer) (Discontinued by Manufacturer)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Material: ABS Resin Nominal Coverage Angle (HxV)-6 dB:90x40 - Mounting Holes Number: 4N </span></li><li><span class="a-list-item"> Cut Off Frequency: 1000 Hz - Bolt Circle Diameter: 102mm (4'') - 76mm (3'') </span></li><li><span class="a-list-item"> Throat Diameter: 36mm - Unit Dimensions: 8.8"h x 17"w x 7.7"d </span></li><li><span class="a-list-item"> Mounting Flange Diameter: 114mm </span></li><li><span class="a-list-item"> Mounting Hole Diameter: 6.5mm </span></li><li><span class="a-list-item"> Cut off frequency: 1000Hz </span></li><li><span class="a-list-item"> Throat diameter: 36mm </span></li><li><span class="a-list-item"> Bolt circle diameter: 102mm - 76mm </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41NGDWH5GhL.jpg" noproxy>