What is included in the LZ21WWJ12 Long Life recirculation kit?

The kit includes 2 filter cassettes, a flexible aluminium ducting and a ducting clamp.

How long does the Long Life Regenerative filter remove odours?

It removes odours reliably over a period of up to 10 years.

How often should the active carbon filter be regenerated?

Regeneration of the active carbon filter is recommended every 4 months.

How do I regenerate the Long Life active carbon filter?

Simply place the filter in the oven for 2 hours at 200°C to regenerate it.

Product Information Sheet

Siemens Recirculation Kit 90cm

SKU: LZ21WWJ12

Woodalls 1053–1055 Finchley Road, London, NW11 7ES
+44 (0)208 455 3925 · [email protected] · www.woodalls.co.uk

Mon–Fri: 9:00am – 5:00pm | Sat–Sun: Closed

Printed 19 July 2026

Siemens LZ21WWJ12 Recirculation Kit 90cm

SKU: LZ21WWJ12 · EAN: 4242003886236

The LZ21WWJ12 Long Life recirculation kit is designed for recirculation operation and fits 90 cm Glassdraft models. It uses a Long Life Regenerative filter that reliably removes odours for up to 10 years. Supplied as initial equipment, the kit includes 2 filter cassettes, flexible aluminium ducting and a ducting clamp. The regenerative active carbon filter can be used multiple times and regenerated in a domestic oven for continued performance.

2 Year Warranty

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Product name	Long-life recirculation kit, initial equipment
Model code	LZ21WWJ12
Operation type	For recirculation operation
Compatibility	Fits 90 cm Glassdraft
Filter type	Long Life Regenerative active carbon filter
Odour removal period	Removes odours reliably over a period of up to 10 years
Kit contents	2 filter cassettes, flexible aluminium ducting, ducting clamp
Dimensions of packed product (H×W×D)	270×350×450 mm
Pallet dimensions	180.0×80.0×120.0
Standard number of units per pallet	24
Weight	4.5 kg
Gross weight	5.6 kg
EAN code	4242003886236

Delivery & Returns

Delivery

Free delivery to London addresses to ground floor only (service lift access accepted). Some appliances carry standard manufacturer delivery charges — confirmed at time of quotation. UK mainland delivery available for an additional charge. Lead times vary by make, model, and manufacturer availability.

Installation

We do not install appliances. We can recommend vetted fitters operating within London — payments are made directly with the fitter. Woodalls accepts no responsibility for installation work carried out by any third party.

Returns

14-day return window from the day after delivery. Items must be unused, uninstalled, and in original packaging. View our full returns policy →

Authorised Dealer

All products are supplied as an authorised Siemens dealer, with full manufacturer warranty. Established 1967.