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120mm to 100mm reducer

4

120mm to 100mm reducer for sale on largest auction and classifieds sites

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Brand new duct reducer 120mm - brand-new,

Brand new duct reducer 120mm - brand-new,

£6.94
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Brand new duct reducer - brand-new,

Brand new duct reducer - brand-new,

£6.97
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Duct reducer 120mm - 120mm, 100mm

Duct reducer 120mm - 120mm, 100mm

£8.90
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Brand new duct reducer 120mm - duct,

Brand new duct reducer 120mm - duct,

£8.33
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100mm 120mm ventilation - 100mm,

100mm 120mm ventilation - 100mm,

£8.49
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100mm 120mm ventilation - 100mm,

100mm 120mm ventilation - 100mm,

£8.49
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Brand new duct reducer 120mm - brand-new,

Brand new duct reducer 120mm - brand-new,

£8.80
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Duct reducer 120mm 100mm - duct, to

Duct reducer 120mm 100mm - duct, to

£8.19
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Easy install solution 120mm - easy,

Easy install solution 120mm - easy,

£8.36
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Brand new duct reducer 120mm - duct,

Brand new duct reducer 120mm - duct,

£7.01
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Brand new duct - brand-new, reducer

Brand new duct - brand-new, reducer

£8.90
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Dust extraction hose reducer - hose,

Dust extraction hose reducer - hose,

£25.00
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Brand new duct reducer 120mm - duct,

Brand new duct reducer 120mm - duct,

£8.59
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Reducer for flue - flue, pipes

Reducer for flue - flue, pipes

£9.08
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Precise size reduction heat - size,

Precise size reduction heat - size,

£9.78
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Enhance your ventilation - enhance,

Enhance your ventilation - enhance,

£8.77
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Brand new duct - duct, 120mm

Brand new duct - duct, 120mm

£8.03
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Material reliable connection - material,

Material reliable connection - material,

£9.06
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Duct reducer 120mm - duct, 100mm

Duct reducer 120mm - duct, 100mm

£8.19
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Leak connection silver - leak,

Leak connection silver - leak,

£8.22
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120mm 100mm reducing flue - 120mm,

120mm 100mm reducing flue - 120mm,

£8.27
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Easy use duct reducer - to,

Easy use duct reducer - to,

£7.79
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Application silver stainless - application,

Application silver stainless - application,

£9.18
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120mm 100mm diameter - 120mm, to

120mm 100mm diameter - 120mm, to

£9.35
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Easy use duct reducer - easy, pipe

Easy use duct reducer - easy, pipe

£7.87
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Ventilation flue reducer pipe - flue,

Ventilation flue reducer pipe - flue,

£9.23
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Smoke venting reducer pipe - smoke,

Smoke venting reducer pipe - smoke,

£10.94
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Easy use duct reducer - duct, pipe

Easy use duct reducer - duct, pipe

£7.44
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Heat resistant chimney - resistant,

Heat resistant chimney - resistant,

£8.64
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Ventilation flue reducer pipe - reducer,

Ventilation flue reducer pipe - reducer,

£11.39
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Reducer flue pipe for - reducer,

Reducer flue pipe for - reducer,

£9.44
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Chimney pipe reducer 120mm - reducer,

Chimney pipe reducer 120mm - reducer,

£10.51
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Chimney pipe reducer - reducer, 120mm

Chimney pipe reducer - reducer, 120mm

£9.08
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Efficient ventilation silver - efficient,

Efficient ventilation silver - efficient,

£8.03
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Efficient flue pipe reducer - efficient,

Efficient flue pipe reducer - efficient,

£10.94
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Efficient flue pipe reducer - efficient,

Efficient flue pipe reducer - efficient,

£10.12
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Silver flue pipe - silver,

Silver flue pipe - silver,

£7.66
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Easy use duct reducer pipe - use,

Easy use duct reducer pipe - use,

£8.05
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Ventilation flue reducer pipe - flue,

Ventilation flue reducer pipe - flue,

£11.64
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120mm 100mm reducing - reducing, flue

120mm 100mm reducing - reducing, flue

£11.52
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Efficient flue pipe - pipe, reducer

Efficient flue pipe - pipe, reducer

£9.53
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Flue pipe with stainless steel - with,

Flue pipe with stainless steel - with,

£9.10
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Ventilation flue reducer - flue,

Ventilation flue reducer - flue,

£9.08
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Reducer flue pipe - pipe, for

Reducer flue pipe - pipe, for

£9.26
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Chimney pipe reducer 120mm - reducer, to

Chimney pipe reducer 120mm - reducer, to

£10.36
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Silver flue pipe reducer for - silver,

Silver flue pipe reducer for - silver,

£7.57
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Ventilation flue reducer pipe - flue,

Ventilation flue reducer pipe - flue,

£7.48
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Efficient ventilation silver - efficient,

Efficient ventilation silver - efficient,

£8.96
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Easy install round duct - easy,

Easy install round duct - easy,

£8.68
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Stainless steel chimney - steel,

Stainless steel chimney - steel,

£8.33
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Stainless steel chimney - stainless,

Stainless steel chimney - stainless,

£9.83
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Bend style flue pipe reducer - bend,

Bend style flue pipe reducer - bend,

£9.36
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Stainless steel bend type - stainless,

Stainless steel bend type - stainless,

£9.43
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Flue pipe with stainless steel - flue,

Flue pipe with stainless steel - flue,

£8.98
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Flue pipe with stainless - pipe,

Flue pipe with stainless - pipe,

£9.35
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Reducer for flue - reducer, pipes

Reducer for flue - reducer, pipes

£10.36
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Ventilation flue reducer pipe - ventilation,

Ventilation flue reducer pipe - ventilation,

£10.27
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Robust stainless steel - stainless, flue

Robust stainless steel - stainless, flue

£11.69
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Flue pipe with stainless - stainless, steel

Flue pipe with stainless - stainless, steel

£8.87
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Bend type reducing - type,

Bend type reducing - type,

£9.08
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Reducer for flue - for, pipes

Reducer for flue - for, pipes

£11.77
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Bend type reducing pipe for - bend,

Bend type reducing pipe for - bend,

£9.23
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Silver flue pipe reducer - silver,

Silver flue pipe reducer - silver,

£10.09
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Mobi aluminium duct reducer - duct,

Mobi aluminium duct reducer - duct,

£11.03
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Robust stainless steel flue - steel,

Robust stainless steel flue - steel,

£9.24
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Chimney pipe reducer 120mm - pipe,

Chimney pipe reducer 120mm - pipe,

£11.51
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Stainless steel flue adapter - stainless,

Stainless steel flue adapter - stainless,

£9.43
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Stainless steel chimney - steel,

Stainless steel chimney - steel,

£9.79
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Reducer for flue pipes - reducer,

Reducer for flue pipes - reducer,

£9.05
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Stainless steel bend type - stainless,

Stainless steel bend type - stainless,

£10.94
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120mm 100mm reducing - to, flue

120mm 100mm reducing - to, flue

£9.64
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Stainless steel chimney - steel,

Stainless steel chimney - steel,

£11.99
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Bend type reducing pipe for - bend,

Bend type reducing pipe for - bend,

£9.58
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Ventilation flue reducer pipe - reducer,

Ventilation flue reducer pipe - reducer,

£9.18
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Bend type reducing - bend, pipe

Bend type reducing - bend, pipe

£12.62
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Stainless steel flue - stainless, adapter

Stainless steel flue - stainless, adapter

£9.47
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120mm 100mm reducing - 120mm,

120mm 100mm reducing - 120mm,

£9.24
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Stainless steel flue adapter - flue,

Stainless steel flue adapter - flue,

£9.38
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Stainless steel flue pipe - stainless,

Stainless steel flue pipe - stainless,

£9.83
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Stainless steel flue adapter - stainless,

Stainless steel flue adapter - stainless,

£11.48
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Silver flue pipe - silver,

Silver flue pipe - silver,

£12.41
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Stainless steel flue pipe - stainless,

Stainless steel flue pipe - stainless,

£11.82
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Stainless steel flue - stainless,

Stainless steel flue - stainless,

£9.18
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Reducing connector ventilation - reducing,

Reducing connector ventilation - reducing,

£36.39
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Stainless steel elbow reducer - elbow,

Stainless steel elbow reducer - elbow,

£18.25
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Stainless steel 120mm - steel, to

Stainless steel 120mm - steel, to

£18.46
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📊86 listings · from £6.94 · avg £10.09
⚠️ These listings were last updated more than 12 days ago. Search for fresh listings

Browse 86 120mm to 100mm reducer listings currently in our index. Prices range from £6.94 to £36.39, with an average of £10.09. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about 120mm to 100mm reducer →

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Everything you need to know about 120mm to 100mm reducer

Whether you are looking for a brand-new or second-hand 120mm to 100mm reducer, eBay offers one of the largest selections available online. With 86 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £6.94, while premium listings can reach £36.39 — giving you a wide budget spread to work with. The average price of £10.09 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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