RONDO COANDA 100-125
3.9" / 4.9" Duct Connectors
RONDO 100-125
5.9" / 6.3" Duct Connectors
3.9" / 4.9" Duct Connectors
RONDO 150-160
KVADRO 100-125
3.9" / 4.9" Duct Connectors
ERGOVENT
RONDO & KVADRO
The RONDO and KVADRO are flush-mounted gypsum diffusers that integrate directly into ceiling and wall surfaces. Installed and finished to match, they leave no visible grille, frame, or hardware.
Available in round (RONDO) and square (KVADRO) profiles, both models feature a solid, bubble-free gypsum body that is antistatic, paint-ready, and resistant to dust accumulation. A magnetic cap snaps on and off for tool-free cleaning and adjustment, leaving the ceiling finish intact. Adjustable fasteners accommodate single, double, or custom drywall thicknesses. Engineered for both supply and exhaust systems, with airflow capacity up to 76.5 CFM for larger spaces.
RONDO is a Red Dot Award and German Innovation Award winner. Available in the United States through Ventek America.
Red Dot Award Winner 2023
The RONDO earned the Red Dot Award 2023 in the HVAC product design category, selected from over 20,000 competing products worldwide.
RONDO COANDA 100-125
3.9" / 4.9" Duct Connectors
RONDO 100-125
5.9" / 6.3" Duct Connectors
3.9" / 4.9" Duct Connectors
RONDO 150-160
KVADRO 100-125
3.9" / 4.9" Duct Connectors
ERGOVENT
RONDO and KVADRO
The RONDO and KVADRO are flush-mounted gypsum diffusers that integrate directly into ceiling and wall surfaces. Installed and finished to match, they leave no visible grille, frame, or hardware.
Available in round (RONDO) and square (KVADRO) profiles, both models feature a solid, bubble-free gypsum body that is antistatic, paint-ready, and resistant to dust accumulation. A magnetic cap snaps on and off for tool-free cleaning and adjustment, leaving the ceiling finish intact. Adjustable fasteners accommodate single, double, or custom drywall thicknesses. Engineered for both supply and exhaust systems, with airflow capacity up to 76.5 CFM for larger spaces.
RONDO is a Red Dot Award and German Innovation Award winner. Available in the United States through Ventek America.
The RONDO disappears into your ceiling. Its circular form is plastered directly into drywall, painted to match, and leaves no visible grille, no frame, just a clean, seamless surface. That precision earned the Red Dot Award 2023 in the HVAC product design category, selected from over 20,000 competing products worldwide.
The RONDO frameless air diffuser combines seamless ceiling integration with efficient airflow distribution and exceptionally low noise levels. Engineered for both supply and exhaust systems, it perfectly fits luxury residential and commercial spaces alike. Crafted from high-grade gypsum, this permanent solution ensures reliable, lifelong performance while blending flawlessly with modern architectural interiors.
Designed to disappear, built to last
Plastered flush with the ceiling and painted to match. Invisible to guests, perfect for the space.
Moisture-resistant and seamless. No grille, no frame, just a clean ceiling.
Concealed airflow that never competes with your design. Comfort without compromise.
Use Cases
RONDO COANDA
RONDO
KVADRO
Plastered flush with the ceiling and painted to match. Invisible to guests, perfect for the space.
Moisture-resistant and seamless. No grille, no frame, just a clean ceiling.
Concealed airflow that never competes with your design. Comfort without compromise.
Use Cases
RONDO COANDA
RONDO
KVADRO
RONDO / KVADRO SPECIFICATIONS
RONDO 100
RONDO 125
RONDO 150
RONDO 160
R-COANDA 100
KVADRO 100
Duct Sizes
Body Dimensions
Body Height
Height with Duct
Air Volume
3.94"
9.37"
1.89"
3.5"
53 CFM
88.3 CFM
88.3 CFM
R-COANDA 125
KVADRO 125
53 CFM
53 CFM
73.6 CFM
58.9 CFM
73.6 CFM
4.92"
9.37"
1.89"
1.89"
1.89"
1.89"
1.89"
1.97"
1.97"
11.65"
11.65"
10.63"
10.63"
2 x 9.45"
2 x 9.45"
5.91"
6.3"
3.94"
4.92"
3.94"
4.92"
3.5"
3.58"
3.58"
3.55"
3.55"
3.5"
3.5"
Duct Systems
Application
Additional Features
Easy Installation, Paintable Surface, Antistatic, Noiseless; Made frmo Recycled Plastic
Steel or Plastic Ducts, Plenum Box
Supply and Exhaust
