What is the Siemens HZ9VDSS1 used for?

It is a flat duct, 249 mm, female connector sleeve used to connect male ducting parts together in a ducting system. It is required between every male accessory.

Does this connector sleeve require duct tape for airtightness?

No. It has directly integrated sealings that provide full airtightness without the necessity for any duct–tapes.

How is the HZ9VDSS1 connected to other ducting elements?

It connects easily via a time–saving click mechanism when combining with compatible male ducting elements.

What flame resistance standards does this product meet?

It complies with the Needle Flame Test according to IEC 60695–11–5 and meets the V2 flammability class according to UL94.

What are the packed product dimensions and weight?

The packed product measures 60 × 89 × 272 mm and has a gross weight of 0.2 kg, with a net weight of 0.1 kg.

Product Information Sheet

Siemens Flexible Connection piece for use between straight channel ducting components and b

SKU: HZ9VDSS2

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 3 June 2026

Siemens HZ9VDSS2 Flexible Connection piece for use between straight channel ducting components and b

SKU: HZ9VDSS2 · EAN: 4242003900246

The Siemens HZ9VDSS1 is a flat duct, 249 mm, female connector sleeve designed to connect male ducting parts together. It is required between every male accessory and features directly integrated sealings for full airtightness without duct tape. With an aerodynamically optimised design to minimise pressure loss and maximise air flow rate, it offers easy connection via a time–saving click mechanism and complies with specified flame resistance standards.

2 Year Warranty

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Product name	Flat duct, 249 mm, connector sleeve female
Model code	HZ9VDSS1
Type	Connector sleeve (female) for flat duct
Functional length	249 mm (flat duct)
Dimensions of packed product (H × W × D)	60 × 89 × 272 mm
Pallet dimensions	95.0 × 80.0 × 120.0
Standard number of units per pallet	324
Weight (net)	0.1 kg
Gross weight	0.2 kg
EAN code	4242003890882
Compliance – Needle Flame Test	IEC 60695–11–5
Flammability class	V2 (according to UL94)

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.

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Siemens Flexible Connection piece for use between straight channel ducting components and b

Siemens HZ9VDSS2 Flexible Connection piece for use between straight channel ducting components and b

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