Dimensional Data for Z-Flex Double Wall Stainless Steel Venting

Global Protankless Supply is an Authorized Distributor of all Z-Flex Z-Vent stainless steel venting.  We provide stainless steel venting in diameters of 3" all the way up to 24".  The Z-Flex Z-Vent stainless steel (AL29-4C) venting comes in either single wall or double wall venting.  Dimensions on the double wall venting is different than the single wall venting. All Z-Flex Z-Vent double wall venting has an inside diameter dimension and an outside diameter dimension.  As an example a piece of Z-Flex Z-Vent double wall stainless steel venting pipe 4" diameter by 4' long would have an inside diameter of 4" and an outside diameter of 6" due to the double wall.

Please call Global Protankless Supply at 866-289-4652 for any further questions or to place an order.

Discrepancy in Dimensions for Bosch Therm 520HN & 520PN

There was recently a discrepancy found in the dimensions (HxDxW) for the Bosch Therm 520 series gas tankless water heaters in the product selection guide.  The discrepancy has been corrected.   Please always follow the instructions in the installation manual for a safe and proper installation of the gas tankless water heater.  The dimensions in the installation manual for the Bosch Therm 520 series heaters is correct and is:  H 25.75 x D 8.66 x W 16.73.