Always happy with the service we get from rowells you guys make everything so easy, and all of your employees are well informed, communicate well, and are professional & friendly thanks so much! Press ctrl + d to bookmark this page for later or tell your friends about it with. What is the best way to find a new plumber? The /mm standard horizontal flue kit includes the ° elbow and suitable for condensing boilers only. Thank you so much for assigning a positive, knowledgeable, and efficient.