Roof funnel VF-ТО Roof funnel VF-ТО. Roof funnel with crimp flange, completed with a gulley with a thrust ring Roof funnel VF-ТО. Roof funnel with crimp flange, completed with a gulley with a thrust ring Roof funnel with crimp flange, completed with a gulley with a thrust ring 51 Мaterial: Made of low-pressure polyethylene, resistant to weather and UV impact within – 50 to + 80 С range General applications: VF funnels are completed with a gulley, which allows using them for maintenance or assembly of new accessible roofs. Facebook ВКонтакте Twitter Share