POWERTEC 70145 4-Inch to 3-Inch Reducer

Product Information

If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. To reduce the risk of fire, never leave vintage electrical or electronic products plugged in unattended. By following these instructions, you'll be able to enjoy the benefits of improved cooling for your PC.

Manufacturer warranties and service options may not be valid or available outside of the United States. Without these technologies, things like personalised recommendations, your account preferences, or localisation may not work correctly.I read in other forums that this will create resistance and reduce efficiency, but is it significant considering the vent pipe length?

Maintains airflow efficiency by creating a seamless connection between two different sized duct openings. It features a raised lip on the reducer end to provide extra grip on ducting or duct openings, while the increaser end features a flat brim to achieve a flush fit. FAMCO takes Online Security very seriously and uses the most trusted names in the business to secure your online payments - currently accepting all major credit cards, as well as PayPal, Apple Pay, and Google Pay. Brass water meter union with 1/2 inch BSPT male thread and 3/4 female thread( 3/4 is not present in model , 1/2 is)Manufacturer code: 143128.A ventilation ducting tool designed to fit different-sized duct hole openings together, connecting smaller ducting to bigger fans and vice versa. Unfortunately, I found the product after a huge amount of rendering I needed to do during the hot spell, but at least I'm ready for next time.