A Cultural Landmark Transformed with eFlow-Advanced Ventilation Solutions
At the heart of Harlem, the National Black Theatre (NBT) project at 2033 Fifth Avenue is redefining mixed-use development. This ambitious 21-story, 240-foot-tall tower will house 222 rental units (a portion dedicated to affordable housing) alongside the revitalized National Black Theatre, occupying 25,000 square feet. The cultural space will feature a 250-seat flexible temple, a 99-seat studio theatre, classrooms, and offices. To support this iconic development, eFlow USA supplied state-of-the-art ventilation solutions, including 3” Constant Airflow Regulators (CARs) at 25 CFM in custom 6″x4″ mounting plate assemblies and 4” CARs at 30 CFM and 25 CFM in 6″x6″ wall mount assemblies. These systems, installed by R&S United Services Inc., ensure energy efficiency, superior indoor air quality, and seamless integration.
This transformative project, led by Handel Architects and Marvel Architects, with developers Ray and LMXD, highlights the power of collaboration to deliver a landmark that honors Harlem’s cultural legacy while setting new standards for sustainability and innovation.

National Black Theatre, 2033 Fifth Avenue, New York, NY – eFlow-CAR. Picture credit to: https://newyorkyimby.com/
eFlow USA’s Technical Contributions
eFlow USA’s advanced ventilation solutions were customized to meet the unique needs of this mixed-use development. Key products include:
- 3” Constant Airflow Regulators (CARs) at 25 CFM in custom 6″x4″ mounting plate assemblies.
- 4” Constant Airflow Regulators (CARs) at 30 CFM and 25 CFM in 6″x6″ wall mount assemblies.
- Additional eFlow Products designed to balance airflow across residential and commercial spaces.
The benefits of these systems include:
- Energy Efficiency: Optimized airflow reduces strain on HVAC systems, resulting in lower energy consumption and operational costs.
- Enhanced Indoor Air Quality: Balanced ventilation minimizes pollutants, ensuring healthier environments for residents, staff, and visitors.
- Custom Solutions: Tailored mounting plate assemblies ensure seamless integration across the development.
Collaborative Excellence
The success of the National Black Theatre project stems from the expertise and vision of its partners:
- Architects: Handel Architects and Marvel Architects, renowned for their innovation and sustainable designs.
- Developers: Ray and LMXD, leaders in transformative urban projects.
- Installer: R&S United Services Inc., a specialist in advanced HVAC system installations.
Redefining Mixed-Use Development in Harlem
The National Black Theatre project is more than just a building—it’s a cultural cornerstone and a model of sustainable urban living. By blending affordable housing, modern residences, and a state-of-the-art cultural hub, this development celebrates Harlem’s rich heritage while looking toward the future. With eFlow USA’s ventilation solutions, the project prioritizes energy efficiency, health, and innovation.
Discover eFlow USA’s Advanced Solutions
With innovative products like Constant Airflow Regulators (CARs) and Wall Fire Damper assemblies, eFlow USA helps developers achieve unparalleled energy savings, indoor air quality, and safety in their projects.
🌐 Website: eflowusa.net
🛒 Order Online: eflowshop.net
📧 Email: [email protected]
📞 Call: 1-833-356-9872
eFlow-CAR FACTS
eFlow-CAR is a simple solution to balancing ventilation systems. Constant Airflow Regulator is a device that automatically regulates airflows in ventilation systems to constant levels. The passive control element responds to duct pressure, and requires no electric sensors, pneumatic sensors or controls. eFlow-CARs promote high indoor air quality and energy savings.
- UL 2043 Classified
- Composed of fire resistant UL 94 ABS plastic
- Diameters offered: 3”, 4″, 5”, 6”, 8″, 10″
- Operating Pressure Range: 0.08 to 2.4 in w.g. (20-600Pa)
- Airflow settings: 15-765 CFM
- Temperature Limits: -22° to 140°F (-30° to 60°C)
- Suitable for both supply and exhaust applications
- No external power supply needed
- Field Adjustable CFM set point
- Capable of maintaining constant airflow within +- 5% for nominal airflow throughout the target operating pressure range of 0.08 to 2.4 in.
- Standard for Energy Efficient Compliance
American Aldes Alternative to Aldes CAR3, Aldes CAR3-S, Aldes CER3-R, Aldes CER3-S, Aldes CER3-S-F, Aldes CSR3-R, Aldes CSR3-S, Aldes CSR3-S-F, Aldes CEB3-WS, CEB3-WB, Aldes CEB3-CS, CEB3-CS-F, Aldes CSB3-WS, Aldes CSB3-WB, Aldes CSB3-CS, Aldes CSB3-CS-F, Aldes ZRT, equal to Aldes MR MAX Alternative to American Aldes: car ii, Equal to Nailer Constant Volume Regulator Nailer CVR CVR-SP – Constant Volume Regulator – Standard Pressure CVR-HP – Constant Volume Regulator – High Pressure CVR-LP – Constant Volume Regulator – Low Pressure CVR-GM – Constant Volume Regulator – Grille Mount CVR-FD – Constant Volume Regulator – w/ Fire Damper CVR-T – Constant Volume Regulator – Transition Collar Equal to young regulator Constant Volume Regulator CVR, young regulator CVD, CVD-S constant volume damper, CVDR: Rectangular Constant Volume Damper, 4011-CVR: Fresh Air Damper w/ a CVR, CVEF8, CVEF5, CVRF2, CVR-LP Constant Volume Regulator Low Pressure, CVR-HP Constant Volume Regulator High Pressure model cvrf5, model cvr8, cvp plus enhanced constant volume regulator, cvpfd constant volume regulator in a UL-rated assembly, cvpf5 enhanced constant volume regulator wall mount box, cvpf2 register box, cvd constant volume damper, cvdr rectangular constant volume damper, cvrf8, cvrf5, cvrf2, CVR, CVRF1, CVRF2, CVRF5, CVRF8 Alternative to greenheck ABD, ABD-FD, ABD-RB, ABD-T, ABD-Z1, ABD-Z2.
Automatic balancing damper, automatic airflow balancing, automatic balancing valve Equal to United Enertech constant volume regulator model, precision flow model, CR, CR-LP, CR-HP, CRB-10-S, CRB-10-S-CD, CRB-10-E, CRB-10-E-CB, CRB-10-E.