Rinnai FOT150 3 to 4.5-Inch Standard Vent Kit with Two 90-Degree Elbows<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Flue Model-FOT-150</li><li>Flue Type-Type-S</li><li>Extends From/To-3-Inch to 4-1/2-Inch</li><li>Hole Diameter-3 1/8-Inch</li><li>Typical Application-Thin Walls Mobile Homes</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41MrMQ1E8IL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41hPy4BGrjL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/419XjJhvHUL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41aaN0Vt-FL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51ye2h5P8oL.jpg" noproxy>