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Astria Superior Catalyst Cartridge (F3543)

Original price was: $699.00.Current price is: $650.00.

This is an OEM Astria Superior Catalyst Cartridge replacement that is compatible with select Astria & Superior wood fireplaces (see applicable models below). This is a genuine replacement part that will ship new in its original packaging, it is not an aftermarket copy.

OEM Part Number: F3543

Product Description: This is a genuine replacement catalyst cartridge for select Astria and Superior wood fireplaces.

Applicable Models:

Astria Wood Fireplaces:

  • Ladera CAT

Superior Wood Fireplaces:

  • WRT3920WS CAT

Important Notes: Catalyst parts can be very fragile and must be handled with care when installing or removing.

Catalytic Combustor Functionality

A catalytic combustor is a device used in wood-burning fireplaces and stoves to improve the efficiency of combustion and reduce the amount of pollutants emitted into the atmosphere.

The combustor is made of a ceramic or metal honeycomb-like structure coated with a catalyst, usually made of precious metals such as platinum, palladium, or rhodium. When the smoke from the fire passes through the combustor, the catalyst helps to break down the unburned gases and particles, allowing them to burn more completely.

The result is a hotter and cleaner burning fire, with fewer emissions of carbon monoxide, nitrogen oxides, and particulate matter. This makes the fireplace or stove more efficient, reducing fuel consumption and saving money, while also reducing air pollution and improving indoor air quality.

Catalytic combustors require periodic maintenance, such as cleaning and replacement of the catalyst, to ensure proper functioning.

We are continuously adding new products to our website. If you were unable to find what you were looking for please use our Parts Request Form.

This genuine Astria Superior Catalyst Cartridge is typically in stock ready to ship.

Weight 5 lbs
Dimensions 16 × 16 × 4 in


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