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Plaster-in air diffusers for ventilation are modern gypsum ceiling diffusers designed for integration into plasterboard ceilings, concealing the visible components of the ventilation system. The FRAMELESS range includes round RONDO and square KVADRO diffusers. Their bodies are plastered and painted to match the ceiling, leaving only a narrow, elegant airflow slot visible. The removable central cover is secured by magnetic holders. Available connection diameters are Ø100, Ø125 and Ø160 mm, depending on the model. The diffusers can be installed in single- or double-layer plasterboard ceilings in residential and commercial buildings.
We deliver worldwide.
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Plaster-in air diffusers are gypsum ventilation components designed to be integrated into plasterboard ceilings. Unlike conventional plastic or metal diffusers, their bodies are plastered and painted in the same colour as the ceiling. After finishing, only a narrow airflow slot remains visible, allowing the diffuser to blend into the ceiling surface.
These products are also known as concealed air diffusers, frameless ceiling diffusers, gypsum diffusers or plaster-in ventilation diffusers. They are particularly suitable for modern and minimalist interiors where a continuous ceiling finish is important.
The el-vent.com range includes the FRAMELESS series in two shapes: round RONDO and square KVADRO. Both versions have removable central covers held by magnets, but differ in their shape and available connection diameters.
FRAMELESS RONDO are round gypsum air diffusers designed for plasterboard ceiling installation. Once installed and finished, a subtle ring-shaped airflow slot remains visible in the ceiling.
The round design complements different interior styles. The diffuser body can be plastered and painted with the same paint as the ceiling, eliminating the need to match a separate decorative finish.
Available RONDO connection diameters: Ø100, Ø125 and Ø160 mm.
The manufacturer's stated maximum airflow is 90 m³/h for Ø100 and Ø125 mm models, and 120 m³/h for the Ø160 mm model. Pressure loss and acoustic characteristics must also be considered when designing the ventilation system.
FRAMELESS KVADRO are square gypsum diffusers designed for integration into plasterboard ceilings. Their visible airflow slot follows a square shape, making the series suitable for interiors with straight architectural lines.
The diffuser is plastered and painted to match the ceiling. Magnetic holders secure the central cover without visible screw heads.
Available KVADRO connection diameters: Ø100 and Ø125 mm.
The manufacturer's stated maximum airflow is 90 m³/h for both connection sizes. The choice between KVADRO and RONDO therefore depends on both duct compatibility and the preferred visual design.
The appropriate model depends on the diffuser shape, connection diameter and required system airflow.
| Model | Connection diameter | Maximum airflow |
|---|---|---|
| RONDO | Ø100 mm | 90 m³/h |
| RONDO | Ø125 mm | 90 m³/h |
| RONDO | Ø160 mm | 120 m³/h |
| KVADRO | Ø100 mm | 90 m³/h |
| KVADRO | Ø125 mm | 90 m³/h |
These maximum airflow values are manufacturer specifications, not recommended operating points for every installation. Actual selection should account for design airflow, pressure loss, acoustic performance and ventilation system balancing.
FRAMELESS diffusers are designed for single- or double-layer plasterboard ceilings. The manufacturer specifies compatibility with different connection methods, although the actual installation must match the ductwork and ceiling construction.
The manufacturer's installation instructions must be followed. The airflow slot must not be filled or blocked with paint, and the central cover must remain removable.
Choose RONDO for a round, ring-shaped air outlet. Choose KVADRO for a square opening that complements straight architectural lines. Both versions can be plastered and painted to match the ceiling.
RONDO is available in Ø100, Ø125 and Ø160 mm, while KVADRO is available in Ø100 and Ø125 mm. Always verify the compatibility of the diffuser connection with the duct or mounting fitting.
The stated maximum airflow is 90 m³/h for Ø100 and Ø125 mm variants and 120 m³/h for the Ø160 mm RONDO. Pressure loss and noise data should also be checked using the manufacturer's technical diagrams.
FRAMELESS diffusers are intended for plasterboard ceilings. Installation is possible in single- or double-layer constructions according to the manufacturer's instructions. The quality of filling and painting affects how discreetly the diffuser blends into the ceiling.
The magnetic cover can be removed to provide access to the inner diffuser area. Use cleaning products suitable for the gypsum construction and painted surfaces, and follow the manufacturer's recommendations.
Plaster-in gypsum diffusers are integrated into the ceiling finish and painted to match it. They provide a discreet appearance but require filling and painting work during installation.
Conventional plastic or metal diffusers generally have a visible decorative front and may be installed without additional ceiling finishing. They can be more practical when the ceiling is already finished or frequent access is required.
In both cases, airflow, pressure loss, acoustic characteristics and mounting requirements should determine the final choice.
It is a ventilation component integrated into a plasterboard ceiling. Its body is filled and painted together with the ceiling, leaving only the airflow opening visible.
The diffuser body visually blends into the ceiling, but the narrow airflow slot remains visible. It is round in RONDO models and square in KVADRO models.
RONDO has a round airflow opening and is available in Ø100, Ø125 and Ø160 mm. KVADRO has a square opening and is available in Ø100 and Ø125 mm.
Yes. They are designed to be plastered and painted with the ceiling. Keep the airflow slot open and ensure the central cover can still be removed.
Yes. The manufacturer specifies installation in single- or double-layer plasterboard ceilings according to its installation instructions.
It is held by magnetic fixings, which eliminate visible fixing screw heads and allow the cover to be removed.
The manufacturer specifies up to 90 m³/h for Ø100 and Ø125 mm models and up to 120 m³/h for the Ø160 mm RONDO model. The actual operating airflow must be determined by the ventilation design.
They can be used where their connection dimensions and technical performance match the ventilation or heat recovery system design.
The manufacturer specifies the FRAMELESS series for plasterboard ceilings. Any other installation arrangement must be checked against the manufacturer's instructions.
The product description does not specify an integrated airflow adjustment mechanism. Airflow should be balanced using the appropriate components of the ventilation system.
Noise depends on airflow, pressure loss and installation conditions. The manufacturer provides pressure loss and noise diagrams to help assess operating conditions.
Yes. el-vent.com delivers worldwide. Shipping costs, delivery times and conditions depend on the destination and order contents.
el-vent.com supplies FRAMELESS RONDO and KVADRO plaster-in gypsum air diffusers for residential, commercial and other ventilation systems. Five variants are available with Ø100, Ø125 and Ø160 mm connections, depending on the shape.
We deliver throughout Lithuania and worldwide.
