Brother MFC-L6720DW Toner Cartridges

Genuine TN3605 Series Toner & DR3605 Drum Unit

Toner & Drum Cartridges for Brother MFC-L6720DW

The Brother MFC-L6720DW uses the TN3605 toner series, the TN3615 extra high-yield toner, and the DR3605 drum unit. Available supplies include:

Brother TN3605 Black Toner Cartridge
Brother TN3605XL High Yield Black Toner Cartridge
Brother TN3605XXL Ultra High Yield Black Toner Cartridge
Brother TN3615 Extra High Yield Black Toner Cartridge (18,000 pages)
Brother DR3605 Drum Unit
Compatible TN3605XL Black Toner Cartridge

You may also need:
USB Printer Cables

Brother Toner Cartridges

Brother TN3615 Toner Cartridge
$383.00 inc GST
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Brother Toner Cartridges

Brother TN3605xxl Toner Cartridge
$337.90 inc GST
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Brother Toner Cartridges

Brother TN3605xl Toner Cartridge
$258.80 inc GST
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Brother Toner Cartridges

Brother TN3605 Toner Cartridge
$198.95 inc GST
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Compatible Brother Toners

Compatible Brother TN3605xl Toner Cartridge
$65.95
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Brother Drums

Brother DR3605 Drum Unit
$301.50 inc GST
Add to cart

Brother MFC-L6720DW – Toner & Drum FAQ

Which toner cartridges does the Brother MFC-L6720DW use?

The Brother MFC-L6720DW uses the TN3605 series black toner: TN3605 (standard yield), TN3605XL (high yield) and TN3605XXL (ultra high yield). A compatible TN3605XL option is also available.

What drum unit does the MFC-L6720DW use?

This printer uses the DR3605 drum unit. The drum is separate from the toner and is replaced less frequently.

What is the difference between a toner cartridge and a drum unit?

The toner cartridge (TN3605 series) contains the black toner powder that forms your text and images. The DR3605 drum unit transfers that image onto the paper using heat and pressure. Toner is replaced more often; the drum is replaced after a higher page count.

Can I use compatible toner cartridges in the MFC-L6720DW?

Yes — a compatible TN3605XL high-yield toner option is available for this model. Many offices use compatible toner to help reduce running costs, while still using a genuine DR3605 drum.

Important: Should I update the printer firmware?

Firmware updates released by the manufacturer can sometimes restrict or block compatible cartridges. If your Brother MFC-L6720DW is working normally and recognising your toner, it is usually best to avoid updating the firmware unless a specific security or reliability issue needs to be fixed.

Benefits of Brother MFC-L6720DW Supplies

🖨 Built for heavy office use

TN3605 series toner and the DR3605 drum are designed for higher-volume mono printing, making the MFC-L6720DW suitable for departments and workgroups with constant document workflows.

📦 Flexible toner yield options

Choose between TN3605, TN3605XL and TN3605XXL toner cartridges to match print volume and help reduce the cost per page in busy office environments.

💰 Cost management options

A compatible TN3605XL toner alternative is available alongside genuine Brother supplies, giving businesses extra flexibility in managing printing budgets.

About the Brother MFC-L6720DW

The Brother MFC-L6720DW is a high-end mono laser multi-function printer designed for departments, corporate offices and busy workgroups that need reliable print, copy, scan and fax capability in a single device. It offers fast print speeds, strong duty cycles and advanced paper handling options, making it well suited to environments with ongoing document production and heavy daily use.

With flexible network connectivity, secure printing features and automatic duplex printing, the MFC-L6720DW integrates easily into shared office networks and more complex IT setups. It is commonly used in accounting and finance teams, legal and professional services, medical and health practices, education administration and other organisations that require dependable mono laser output.

This model uses the TN3605 toner series, giving businesses a choice of standard-yield (TN3605), high-yield (TN3605XL) and ultra high-yield (TN3605XXL) cartridges to match printing volume and cost targets. The DR3605 drum unit supports consistent print quality over time and is replaced less frequently than the toner. Together, these supplies help keep the Brother MFC-L6720DW running efficiently as a central device in busy office environments.

Delivery Information
We ship from warehouses located in Adelaide, Melbourne, Sydney, Brisbane and Perth. Orders are dispatched quickly from the nearest warehouse for fast delivery across Australia.