Armstrong International D500631 3/4" Air Vent 133 PSI 5/64" Orifice 21-AR

The Armstrong International D500631 replacement air vent is intended for use in HVAC systems. It has a 3/4-inch diameter with 21-Ar threads, which assure a secure fit with compatible Armstrong International equipment. The vent is appropriate for the majority of HVAC applications since it has a pressure rating of 133 pounds per square inch. It has a 5/64-inch-sized aperture that regulates how much air goes through the vent. Your heating and air conditioning equipment will run more effectively thanks to this regulated airflow, which helps to maintain constant air pressure throughout the system.The D500631 makes sure that air is distributed properly, which makes the environment more comfortable and may result in lower energy costs.