A: Hi CBN23, Thank you for your question on the 843BL wall cap. We recommend sliding the duct over and securing with duct tape.
A: Hi Pawpaw, Thank you for your question on the 843BL wall cap. Unfortunately, we do not offer another wall cap with longer depth for your application.
A: Hi TonyB, Thank you for your question on model 843BL. There is no specific CDM level rated for this wall cap. This model is designed for any fan with a 6" duct size and the cfm's that come with this size duct should adequately open the damper.
A: I would think so but I traced the hole size from the vent and then cut it out with a sawzall
A: We used a 6 3/8" hole saw
A: Hi cone, Thank you for your question on the model 843BL wall cap. The collar on the cap is 6", so we would recommend you cut the hole slightly larger. Please contact Technical Support directly for more assistance at 888-336-6151.
A: Hole size should be about 6 1/4”. The neck on the damper is sized to have a 6” pipe fit inside the neck of the damper.