A single deflection diffuser is a grille with one row of adjustable blades for supply air.
Confirm size and finish.
What is a single deflection diffuser?
Air moves through ducts and enters rooms through diffusers and grilles. Louvers let fresh air in and exhaust air out while keeping rain and sand outside. Hoods, impeller fans and attenuators complete kitchen and ventilation systems.
Size each part for the airflow. Therefore, match diffusers and louvers to the design airflow and keep velocities low for quiet operation.
Further reading
- Air diffusers (Wikipedia)
- Louvers (Wikipedia)
- Kitchen hoods (Wikipedia)
Key terms explained
- Single deflection
- A grille with one set of adjustable blades.
- Double deflection
- A grille with two sets of blades for vertical and horizontal control.
- Egg crate
- A grid grille for return air.
- Sand trap louver
- A louver that drops out sand and dust.
- Attenuator
- A lined duct section that cuts noise.
Features and benefits
- Single, double, linear bar and egg crate diffusers.
- Fresh, exhaust and sand trap louvers.
- Aluminium and non-insulated ducts.
- Kitchen hoods and impeller fans.
Technical specifications
| Product | Supply grille |
|---|---|
| Size or model | Confirm with quote |
| Packing | Confirm with quote |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
Sizes, grades and ratings depend on stock and model. Tell us what you need, and we will confirm before you order.
Applications of a single deflection diffuser
- Offices. Diffusers.
- Kitchens. Hoods and fans.
- Plant rooms. Louvers.
- Desert and dusty sites. Sand trap louvers.
- Return air. Egg crate grilles.
- Long wall runs. Linear bar diffusers.
- Quiet rooms. Attenuators.
- Windows. Ventilation window replacement.
How to choose and install
- Size diffusers by airflow.
- Use sand trap louvers in dusty areas.
- Keep kitchen ducts rigid and cleanable.
- Fit attenuators near fans.
Why choose Sparks Plumbing Experts
- Fans in several sizesInline duct fans and box fans come in a range of diameters, so you can match airflow to the room.
- PVC and metal optionsChoose corrosion-resistant PVC for humid rooms or metal housings for tougher conditions.
- Grilles and diffusers tooDiffusers, louvers and grilles finish the system you are ventilating.
- Sizing guidanceTell us the room size and duct route, and we help you pick a fan with enough airflow.
- Visit or collect in NairobiOur store is at KCB Building, Enterprise Road, in the Industrial Area, so you can see parts before you buy or collect your order.
- Quotes your wayAsk for prices by phone, WhatsApp, email or the online quote form, whichever suits you on site.
- Over 1,600 products in one placeOur catalogue covers 55 categories, so one supplier can handle most of your parts list.
- Help choosing the right partSend a nameplate photo, a drawing or the old part, and we help you match size and specification.
- Single items or project quantitiesWe price a single replacement part just as readily as a full site order.
- Supply across East AfricaWe serve customers across Kenya, and we also supply buyers in Uganda and Tanzania.
Related products and accessories
Browse more: Ventilation · Diffusers · Louvers · HVAC.
Ordering from Sparks Plumbing Experts
We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. You can collect from our store at KCB Building, Enterprise Road, Nairobi, or ask us about delivery to your site. Send your quantities and specifications, and we will reply with prices and availability.
Request a Quote WhatsApp 0726 086 895
Frequently asked questions
What details do you need to quote air distribution items?
Tell us the size, airflow and quantity. A photo of the old part, a nameplate or a drawing also helps. Then call or WhatsApp 0726 086 895, or use the quote form on this page.
Do you deliver air distribution items outside Nairobi?
Yes. We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. Delivery or courier arrangements are agreed when you confirm the order.
How much does a air distribution item cost in Kenya?
The price depends on the item, size or model and the quantity. Therefore, send your list with a quote request and we will reply with current figures.
Which diffuser for supply air?
Single or double deflection, or linear bar.
Which for return air?
Egg crate grilles are common.
Do you make hoods to size?
Send the cooking line size.
Are louvers aluminium?
Confirm with the quote.
Which duct for kitchen extract?
Rigid, cleanable duct.
People also search for
single vs double deflection grille
Double gives more air direction control.
egg crate grille
Return air grille with high free area.
sand trap louver
Stops sand entering air intakes.
kitchen hood size
Larger than the cooking line.
non insulated duct uses
Extract and exhaust air.
Air distribution items price in Kenya
Prices change with size, model and quantity. Request a quote from Sparks Plumbing Experts for current figures.






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