The Bosch AQ4 Power Vent kit has been discontinued. This powervent kit was designed and used for the Bosch models: 1600P, 1600H, 520PN and 520HN heaters.
GlobalTowne still has a couple of the Bosch AQ4 Powervent kits available while supplies last.
Bosch still has some parts in stock for the AQ4 power vent kit such as the Blower motor and other various parts. Stock for the individual parts for the AQ4 powervent kit will only be available for a limited time as supplies last. Please call us at 888-726-9752 for pricing and availability for individual parts.
The Bosch AQ4 powervent kit was designed to make the naturally drafting 1600 and 520 series heaters capable of sidewall venting.