What is the Z861SI1 adapter duct used for?

It is a 150 mm, 90°, round–flat converter with an integrated 90° bend, designed for appliances with a vertical round air outlet, such as Glassdraft models.

What type of connection does the adapter provide?

It is a 90° round–flat adapter element (male) that connects a vertical round air outlet to a flat duct run.

Is the adapter duct easy to install?

The element is described as easy-to-cut and easy-to-connect via the female connector sleeve element, supporting straightforward installation.

How is the air flow performance optimised?

The adapter duct has an aerodynamically optimised design to minimise pressure loss and maximise the air flow rate.

What flame resistance standards does it meet?

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

Product Information Sheet

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

SKU: Z861SI1

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

Neff Z861SI1 90° Adaptor / Converter flat to round (Ø 150mm).

SKU: Z861SI1 · EAN: 4242004254119

For Use with Z811UD0 or Z821PD0

The Z861SI1 adapter duct is a 150 mm, 90°, round–flat converter designed for appliances with a vertical round air outlet, such as Glassdraft models. It combines a flat to round converter with an integrated 90° bend in an aerodynamically optimised form to minimise pressure loss and maximise air flow rate. The adapter element is easy to cut and simple to connect using the female connector sleeve, and it complies with specified flame resistance standards.

2 Year Warranty

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Product name	Adapter duct, 150 mm, 90 °, round-flat
Model code	Z861SI1
Adapter type	90° round-flat adapter element (male)
Application	Flat to round converter with integrated 90° bend for appliances with vertical round air outlet (e.g. Glassdraft)
Dimensions of packed product (H×W×D)	190x235x220 mm
Pallet dimensions	205.0 x 80.0 x 120.0
Quantity per packing unit	8
Standard number of units per pallet	160
Net weight	0.3 kg
Gross weight	0.5 kg
EAN code	4242004254119
Compliance – Needle Flame Test	According to 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 Neff dealer, with full manufacturer warranty. Established 1967.

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Our specialists are on hand to answer any questions about the Neff 90° Adaptor / Converter flat to round (Ø 150mm).. Get in touch and we'll respond within one working day.

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

Neff Z861SI1 90° Adaptor / Converter flat to round (Ø 150mm).

Delivery & Returns

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