5.0 Google rating · Bluff, Durban

Precision-engineered airflow for modern spaces.

Circular Air designs and manufactures ventilation systems for residential, commercial and industrial environments — delivering clean airflow, energy efficiency, and long-lasting performance.

Aluminium ventilation grilles and ductwork manufactured by Circular Air
About us

Air, engineered with intent.

From our workshop in Merebank East, we craft ventilation hardware trusted by HVAC contractors, architects and facility teams across KwaZulu-Natal.

Every grille, diffuser, damper and louver is precision-cut, finished and tested to deliver airflow that performs — quietly, efficiently, and for years.

Clean airflow
Energy efficient
Built to last
Product range

A full catalogue of HVAC components.

Grilles, diffusers, dampers and louvers — manufactured in plastic and aluminium, with optional OBD on every range.

Weather Louvers

Weather Louvers

Storm-resistant facade intake

Ceiling Diffusers

Ceiling Diffusers

Architectural air distribution

Volume Dampers

Volume Dampers

OBD precision control

Full product list

RA
Return Air Grille
High-capacity return air with fixed horizontal blades.
RAFF
Return Air Filter Frame
Integrated filter housing for clean intake airflow.
SGT / SGS
Supply Grilles
Tangential and straight-blade supply grilles.
ECA
Eggcrate Grilles
Plastic & aluminium eggcrate, with or without filter frame.
DD
Double Deflection Grilles
Adjustable horizontal and vertical blades for directional throw.
SD
Single Deflection Grilles
Single-axis deflection for precise air direction.
LG
Linear Grill
Sleek linear bar grilles for modern architectural interiors.
OBD
Opposed Blade Damper Option
Available on all grille ranges for volume control.
DG
Door Grilles
Transfer grilles for balanced room pressurisation.
TD
Trap Doors
Standard and custom-size access panels for ductwork and ceiling voids.
WL
Weather Louvers
Storm-resistant louvers for facade and intake openings.
Why Circular Air

Built around the projects you actually run.

Made-to-spec
Custom sizing and finishes for non-standard openings.
Fast turnaround
Local manufacture keeps lead times short.
Contractor friendly
Trade pricing and bulk quotes on request.
Quality controlled
Every unit inspected before dispatch.
Get in touch

Let's move some air.

Send through your drawings or schedule — we'll respond with sizing, options and a quote.

Phone
068 516 8874 / 061 439 0857
Email
Candice — geraldinecd25@outlook.co
Address
14 Indore Rd, Merebank East, Durban, 4052
Hours
Mon–Fri · Closes 4pm