What is the diameter of the HZ9VDSI1 adapter duct?

The adapter duct has a diameter of ø 150 mm.

Which appliances is this adapter duct designed for?

It is designed for appliances with a vertical round air outlet, for example Glassdraft appliances.

Does the adapter include a 90° bend?

Yes, it is a flat to round converter with an integrated 90° bend and is described as a 90° round–flat adapter element (male).

Is the HZ9VDSI1 easy to install or modify?

The adapter duct is easy to cut and easy to connect via the female connector sleeve element, supporting straightforward installation and adjustment.

What safety or flammability standards does it meet?

The element complies with the Needle Flame Test according to IEC 60695-11-5 and meets the V2 flammability class according to UL94.

Product Information Sheet

Siemens 90° Adaptor / Converter flat to round (Ø 150mm)

SKU: HZ9VDSI1

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 HZ9VDSI1 90° Adaptor / Converter flat to round (Ø 150mm)

SKU: HZ9VDSI1 · EAN: 4242003890905

The HZ9VDSI1 is a flat to round converter adapter duct with a ø 150 mm, 90° bend for appliances with a vertical round air outlet, such as Glassdraft models. This 90° round–flat adapter element (male) features an aerodynamically optimised design to minimise pressure loss and maximise air flow rate. It is easy to cut and easy to connect via the female connector sleeve element, and meets recognised needle flame and flammability test standards.

2 Year Warranty

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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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Product name	Adapter duct, ø 150 mm, 90°, round–flat
Model code	HZ9VDSI1
Duct diameter	ø 150 mm
Adapter angle	90°
Adapter type	90° round–flat adapter element (male) with flat to round conversion
Suitable outlet type	Appliances with vertical round air outlet (e.g. Glassdraft)
Dimensions of packed product (H x W x D)	160 x 210 x 230 mm
Pallet dimensions	171.0 x 80.0 x 120.0
Quantity per packing unit	8
Standard number of units per pallet	128
Net weight	0.2 kg
Gross weight	0.5 kg
EAN code	4242003890905

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Siemens 90° Adaptor / Converter flat to round (Ø 150mm)

Siemens HZ9VDSI1 90° Adaptor / Converter flat to round (Ø 150mm)

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