









See the Difference
Seamless Square Diffusers vs. Outdated


MINIMALIST DESIGN PHILOSOPHY
INNOVATIVE SQUARE DESIGN
Ventmann Square Diffusers – Where Form Meets Function
Square diffusers are far more than standard air outlets—they are refined design elements that highlight the clean lines and sharp angles of modern interiors. Forget bulky, traditional ventilation grilles. With our Square series, the air distributor becomes a seamless part of your architectural vision, eliminating the need to hide it.
Crafted with precision, these diffusers are designed to complement contemporary spaces while delivering optimal airflow. Multiple units can be arranged to create striking geometric patterns, turning ventilation into a visual feature rather than a compromise.
Specifications:
- 100 mm or 125 mm standard
- 2.40 kg (lightweight gypsum construction)
- Industrial-strength magnets with a 95-year lifespan
- Perfect for modular layouts with strong visual symmetry
Square Diffuser
The square ceiling diffuser is easy to install and use, and it can be adjusted to provide a variety of airflow patterns.

ABOUT SQUARE DIFFUSERS
- Ventmann Square Diffusers, also known as square grilles or square ceiling vents, combine functionality with modern design. Crafted from durable materials, they are ideal for both residential and commercial applications. These versatile air distribution solutions can be installed on ceilings or walls, blending seamlessly into plasterboard surfaces for a clean, architectural finish.
- Like our frameless slot diffusers, square air vents offer adjustable airflow patterns, making them suitable for a wide range of HVAC needs. Their sleek design not only complements interiors but also improves indoor air quality, reduces noise levels, and enhances energy efficiency.
- Whether used as ceiling grilles, wall diffusers, or plasterboard air vents, Ventmann Square Diffusers provide reliable performance and long-lasting durability. With upstream filtering, they can also help reduce allergens and pollutants, creating a healthier and more comfortable environment. Perfect for projects where aesthetics and performance go hand in hand.

SQUARE PRODUCT GALLERY
VENTMANN
Discover our Square Line




Step 1
Line Diffuser Installation Instructions
Pre-position the ventilation duct in the ceiling
void, above, through, or alongside the ceiling
joists. If required, purchase reducer(s) to suit
the size of duct and spigots (by others).

Step 2
Fit temporary batons with plasterboard
spacers that are the same thickness as the
final ceiling plasterboard sheet. Where metal
plasterboard rails are employed, suitable self
tapping screws will be required.

Step 3
Fit pre-assembled* diffuser, plenum box and
spigot(s) on top of temporary batons. Note
that spigot (by others) is surface mounted on
plenum using self-tapping screws and
silicone.
*Using screws provided

Step 4
Fix plenum to upper surface using proprietary
fixings (Unistrut etc) (by others). Fix to
plenum with self-tapping screws. Adjust
height of the plenum so that the face of the
diffuser just touches the top of the batons.

Step 5
Remove temporary batons and plasterboard
spacers. Measure and cut the hole in the
main plasterboard sheet. Lift the
plasterboard sheet to meet the diffuser and
fix in place as normal using plasterboard
screws.

Step 6
From the underside, use a jointing compound
to fill the gap between diffuser and
plasterboard. If required, move magnetic
blocks to desired length and fix in place using
jointing compound. Sand and paint.