Our 9 and 12 inch Compact Axial Fans are now available for purchase online.

Marine Air Intake Grilles

Stop salt mist & spray from entering your engine room.

Engine Room Air Intake Grilles

Stop salt mist & spray from entering your engine room.

Engine Room Air Intake Grilles

Stop salt mist & spray from entering your engine room.

Salt spray and mist in your engine room has traditionally been one of the most difficult issues to control. Now with Marine Air Flow moisture reducing air intake grilles, you can remove the problem altogether.  Damage such as blown turbo's, blocked air filters, wide spread corrosion and degradation of your valuable engine room equipment can now be avoided. 


Features of our air handling units include, reduced damage to valuable plant and engine room components, custom made to suit your unique vessel requirements, no moving parts for affordable maintenance and they are supplied with a full installation kit and instructions.


Using engine induction or engine room fans, the moisture laden external air supply is drawn through our grille, passing through a complex system of vanes in the process. This action removes the moisture laden molecules from the air, leaving behind a considerably fresher air supply inducted into your engine room. 

How Our Mist Eliminator Grilles Work

  • Air is drawn into the face of the grille. 
  • The moisture laden air then passes through a system of vanes which trap the moisture in the air and cause it to run vertically down the face of the vanes and then be expelled via the external drain. 
  • The moisture reduced air is then fed into your engine room for use by your engine and other components. 
  • The vanes are sufficiently complicated to trap the moisture, but not so complicated that they significantly slow the air flow.


Air Intake Grille Sizes and Shapes

While we do have some standard sizes and shapes for our intake grilles, a lot of our projects are custom shapes to suit vesells and client requirements. View some of the unique sizes and shapes of Air Intake Grilles we've made to date.



Please note however that the size of the grille (or grilles) you require, is directly related to how much air you need, the size of your engine room and its components.

  • Pair of Triangular Shaped Grilles

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  • Custom Teardrop Grille

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  • Rectangular Air Intake Grille

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  • Paralellogram Shaped Grille

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  • Pair of Long Narrow Intake Grilles

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  • Custom Uniquely Shaped Grille

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How Mist Eliminator Grilles Work

  • Air is drawn into the face of the grille. 
  • The moisture laden air then passes through a system of vanes which trap the moisture in the air and cause it to run vertically down the face of the vanes and then be expelled via the external drain. 
  • The moisture reduced air is then fed into your engine room for use by your engine and other components. 
  • The vanes are sufficiently complicated to trap the moisture, but not so complicated that they significantly slow the air flow.


Ventilation Grilles Flange Info


We have three flange options the details of which are below.


All these options have a fixing flange of 40mm & a face flange of 25mm. 

02:   Stepped Flange

Stepped flange on air intake grille

With this option the grilles extend 30mm to the exterior of the vessel and 70mm protrudes into the air ducting. On this assembly the drain slots maybe mounted on the underside edge and thereby are not easily visible. This achieves a more aesthetic external appearance. 

01:   Flush Flange

Flush flange on air intake grille

With this option the fixing flange is flush to the outside face of the grille. Once installed only the 3mm thickness of the flange protrudes outside of the vessel. 100mm of the grille thickness extends into the air ducting, reducing the airway by 100mm. The drain slots on this assembly are totally visible to the exterior face. 

03:   Limited Flange

Limited flange on air intake grille

With this option the grille extends 70mm to the exterior of the vessel and only 30mm protrudes into the air ducting. This achieves the least restrictive passage within the air ducting. It is recommended that this arrangement is utilised in any restricted airway so as to maximise air flow. 

04:   Fixing Flange

Fixing flange on air intake grille

The fixing flange is 40mm.

Performance Data Mist Eliminators

Performance data for our single and two stage mist eliminators.

Single Stage Grille

Water Handling: 250 litres / min over 1m 2 area
Max Face Velocity: 5.9 metres / sec
Water Handling: 100% visible

Two Stage Grille

Water Handling: 250 litres / min over 1m 2 area
Max Face Velocity: 9 metres / sec
Water Handling: 100% visible

Are you wondering what the difference is between single and two stage (or double stage) air intake grilles? This article will explain the differences and when they are used.

Finished Product Details

Fins / Vanes: Extruded aluminium vane section welded into position.
Surround: Aluminium to 6106T6 grade. Fully Welded.
Supplied Finish: Acid stripped and dipped. Fully immersed chromated & powder coated to chosen colour.
Painting: Can be painted to suit, however we don't supply the grilles painted.
Extras: Fabric coalescing filter fabric is available for extreme situations and extra air filtration.

GRILLE DOCUMENTS AND DOWNLOADS

GRILLE DOCUMENTS AND DOWNLOADS

Installation Instructions

Spec Data Sheets

GRILLE DOCUMENTS AND DOWNLOADS

GRILLE DOCUMENTS AND DOWNLOADS

Why MAFI Mist Eliminator Grilles?

One of the common challenges with inferior Intake Separator Grilles is salt mist bypass causing challenges further down the line resulting in out of warranty equipment failures. IE: salt mist damaging fans, dampers, engines, generators, insulation, corrosion and electronics.

     

Marine Air Flow Intake Grilles are manufactured from marine grade aluminium under strict processes to ensure that our grilles are a perfect fit, have no moving parts, have extreme longevity, and do exactly what we say they do.


We stand by our products and offer a 110% money back guarantee!

Pricing for Air Intake Grilles

Don't be the only boat heading out to sea without the protection of Marine Air Flow air intake grilles.


Air intake grilles are available starting from $1200 + gst.


The price of the grilles is dependent upon varying factors, and of course the size required to ensure accurate operating air supply, is the governing factor in our pricing structure. 

$2000 - $3000

+ GST

On average an intake grille for a recreational fishing boat is typically two to three thousand dollars.


Our mist eliminator grilles come complete with the powder coat colour of your choice and are securely packaged for freight.

Contact us

For a customised quote

We can also manufacture the grilles in almost any shape and offer complete engine room ventilation systems. Before getting in touch, it would be great if you had the information below on hand. 

Don't be the only boat heading out to sea without the protection of Marine Air Flow air intake grilles.


Air intake grilles are available starting from $1200 + gst.


The price of the grilles is dependent upon varying factors, and of course the size required to ensure accurate operating air supply, is the governing factor in our pricing structure. 

$2000 - $3000

+ GST

On average an intake grille for a recreational fishing boat is typically two to three thousand dollars.


Our mist eliminator grilles come complete with the  powder coat color of your choice and are securely packaged for freight.

Contact us

For a customised quote

We can also manufacture the grilles in almost any shape and offer complete engine room ventilation systems. Before getting in touch, it would be great if you had the  information below on hand. 

Information We Will Need For A Quote

1. Engine Room Info

We need to know:

  • the height, width and depth of your engine room or alternatively
  • the engine room volume
  • whether you have AC or DC power and whether your system is 12 or 24 volt.

2. Engine Information

We need to know:

  • number of main engines in your boat
  • the total horsepower of these engines
  • the make and model if you have it

3. Existing Penetrations

If you have existing penetrations we need:

  • the shape of your grille penetration
  • the area of your grille penetration or the dimensions
  • the number of intake and outlet penetration you currently have

4. Extra Info

If this is a new build a GA would be ideal.

We also need to know what extra equipment might be in your engine room and the horsepower of that equipment. IE A genset that is 45hp for example.

5. Current Fans

If you have current fans, we would love to know their make and model so we can be assured they are suitable for our system. If not, we can of course quote you on fans too.

If you can provide more comprehensive information about your vessel and systems that will allow us to generate a more customised quote. Enter your vessel information via this form for the best outcome.

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