Best Mauerkasten 125 2026

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Last Updated - 22.07.2026

Best Choice

01

EasyTec

EASYTEC Energy-saving wall box, diameter 125 mm, stainless steel with two backflow flaps, DN125, 34124e

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

PRODUCT FEATURES - Over 10,000 times sold wall box type, consisting of a high-quality stainless steel outer blind, telescopic tube, flange and double backflow flaps for less heat loss than conventional systems. Thanks to the streamlined design, this wall box is suitable for strong cooker hoods up to approx. 680 m³/h output.
One-piece outer blind - Very high-quality outer blind made of 1.4301 stainless steel, professionally welded and brushed corners and edges, with directly welded and damped metal backflow flap with stainless steel axle and two stainless steel springs (protects much safer against insects than an insect screen and is permanently air permeable + maintenance-free).
Home worker friendly quick assembly - Easy and quick installation because our stainless steel outer blind consists of one component. Since transitions between components and facade should be sealed with silicone, we use this assembly step of sealing for stable bonding of the outer blind. By eliminating drilling and screwing, we make your work easier and shorten the assembly time. This means that even DIY enthusiasts can permanently mount this wall box without special expertise.
EASYTEC Since 1998 - Benefit from our over 25 years of experience in the specialty of ventilation technology for private cooker hoods.
Dimensions - Frame dimensions of the outer blind 190 x 190 mm plus Drip edge, frame dimensions of the kitchen side plastic flange 154 x 154 mm
Difference from multi-part grilles - Our mounting type shortens the installation time, as occurs with multi-part weather protection grilles from other manufacturers. With our product, you do not need to drill holes for dowels in your rock-hard facade, do not hammer dowels, do not screw frames, do not handle narrow rubber seals and do not turn threaded screws into holes.
Adjustable telescopic tube - Durable plastic telescopic tube in DN150 for core holes with a diameter of at least 135 mm, length can be freely adjusted during installation to wall thicknesses from 310 to 520 mm, for narrower walls can be shortened to at least 200mm
"The original with four" - you can recognise the proven "easytec energy-saving wall box" on its four fixed outer slats. With our wall box series, you are purchasing a proven product that has already been purchased in Germany for well over 10,000 buildings

114,00 €
02

VentilationNord

VentilationNord Wall Box 125 with 2 Backflow Flaps for Extractor Hood Weather Protection Ventilation Grille with Insect Screen Blower Door Certificate and High Heat Efficiency Telescopic Tube Diameter

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wall flange with seal: all-round rubber seal ensures an airtight and rainproof finish on the facade.
VENTILATIONNORD Brand quality: proven brand components – durable, low maintenance and perfectly matched for energy-efficient exhaust air solutions.
Telescopic tube diameter 125 mm: infinitely extendable from 300 - 580 mm - adapts flexibly to different wall thicknesses.
Stainless steel weather protection grille: high-quality outer cover with fixed slats - weather-resistant, elegant and durable.
Sound and air protection: the flaps close quietly and reliably – ideal for living areas, kitchens and bathrooms.
Perfect fit wall connection: for standard core holes Ø125 mm – compatible with ventilation pipes and exhaust systems.
Insect protection included: back stainless steel mesh keeps insects out - easy to remove and dishwasher safe for maximum hygiene.
Easy installation: completely pre-assembled – quick, safe assembly without special tools, also suitable for renovations.
Double backflow flaps: Equipped with two car type backflow flaps - reliably prevents cold outside air from entering and protects against heat loss.
BLOWER DOOR CERTIFIED: Meets the highest airtightness requirements – ideal for passive houses, energy-saving houses and low-energy new buildings.

105,00 €
Value for Money

03

EasyTec

EASYTEC Stainless Steel Standard Wall Box Diameter 125 mm DN125 34157.125

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Telescopic tube and flange with backflow flap
Stainless steel exterior blind with movable slats
Price-conscious standard wall box
Original easytec product from seller "cookone"
For core holes with a diameter of at least 135 mm

59,00 €
04

VIOKS

VIOKS Wall Box 125 with Backflow Flap and External Grille Extendible - Wall Duct Extractor / Wall Duct Air Conditioning Wall Connection

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Optimal: the wall duct air conditioner/extractor wall duct for ideal ventilation
Odour elimination: the wall duct for air conditioner/extractor wall box with backflow flap and filter for odour elimination
Flexible: the wall duct air conditioning / extractor wall box 125 with outer grille white can be installed in different rooms. Whether it is about the wall opening for exhaust hose mobile air conditioner, the exhaust air wall box for fireplaces or the wall duct extractor, the wall connection air conditioner fits well into any interior
Easy to install: the installation of the climate wall duct / cooker hood wall box with the exhaust pipe 125 mm, the backflow flap wall box requires no special knowledge. The installation of the wall duct 125, exhaust system 125er(R) can be done with screws or adhesive
Affordable: wall duct for air conditioners / cooker hood, exhaust duct and ventilation grille

38,02 €
05

Vioks.pro

Viоks.pro Wall Box 125 with Backflow Flap and Outer Grille - Wall Duct 125 Extendable / Wall Duct Air Conditioning Cooker Hood

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Practical: the wall duct air conditioner / extractor wall duct / extractor wall box / air conditioner wall duct is practical
Odour elimination: the wall air conditioning duct / wall duct extractor / duct has odour elimination system
Installation: the wall connection air conditioner or the wall duct for air conditioners is uncomplicated. Installation of the wall connection air conditioner
High quality: the air conditioning wall connection is made of high-quality materials. Thus, the air conditioning wall duct is reliable
DETAILS: The round wall bushing for air conditioner is extendable and has the following dimensions: front: 150 × 150 mm, depth: 270-480 mm, flange: 165 × 165 mm, frame thickness: 15 mm

49,12 €
06

VentilationNord

VentilationNord Wall Box 125 with Two Backflow Flaps, Energy-Saving Exhaust and Supply Air Wall Box, Stainless Steel Outer Grille with Wall Seal, Telescopic Tube Diameter 125

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wall seal integrated: with sealing lip on the flange – reliably protects against draughts, dirt and moisture on the outer wall.
VENTILATIONNORD brand quality: high-quality materials, sophisticated design and maximum reliability for continuous operation.
Stainless steel weather protection grille: weatherproof front grille with fixed slats – robust, durable and visually appealing in matt brushed stainless steel.
QUICK ASSEMBLY: Includes wall flange and pre-assembled pipe - easy and safe installation without special tools.
Moisture protection included: with integrated drip edge – directs rainwater specifically and protects the facade from moisture and dirt.
Flexible telescopic tube: length adjustable from 300 to 580 mm - for wall thicknesses from 150 to 280 mm or optionally expandable up to 780 mm.
Energy-saving and efficient: reduces heat loss thanks to insulating backflow flaps – ideal for year-round operation.
Double backflow: Two backflow flaps reliably prevent cold or damp outdoor air from entering - ideal for energy-efficient supply and exhaust air systems.
Diameter 125 mm wall feedthrough: suitable for core holes of diameter 129-140 mm - perfect fit for standard exhaust pipes.
Convertible: check valve in the pipe can be removed – therefore flexible as an exhaust or supply air system.

89,00 €
07

EasyTec

EASYTEC Plastic Wall Box Diameter 125 mm with Telescopic Tube and Backflow Flap | DN125 | MK125 (White)

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Telescopic tube adjustable to wall thickness
Original easytec product from seller "cookone"
Internal backflow flap to prevent draughts and insects
High-quality plastic wall box

14,90 €
08

easytec Lüftungstechnik

Easytec® External Blind, Diameter 150 mm / 125 mm / 100 mm, Brushed Stainless Steel with Metal Backflow Flap - Wall Box, Exhaust Air Louvers, Ventilation Grille

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Outer blind made of rust-proof stainless steel 1.4301
Original easytec product only from seller "cookone"
High-quality stainless steel panel with welded metal backflow flap
DIY friendly: easy installation without drilling the outer wall

93,00 €
09

VentilationNord

VentilationNord Wall Box Diameter 125 cm with Backflow Flap for Extractor Hood Stainless Steel Weather Protection Ventilation Grille with Wall Seal with Insect Protection Grid Telescopic Tube Diameter 125

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With integrated backflow flap: effective protection against cold draughts and odour nuisance thanks to the integrated backflow flap in the telescopic tube.
VENTILATIONNORD brand quality: Sophisticated components, precisely manufactured – for durable and safe exhaust systems.
Noise protection thanks to chamber construction: the continuous, all-round blade geometry prevents rattling noise – particularly quiet in operation.
Insect protection included: fine stainless steel mesh reliably keeps insects away - ideal for kitchen and living room ventilation.
High quality and durable: made of weatherproof stainless steel with fixed slats for reliable protection against rain, wind and dirt - ideal for use on the outer wall.
Flexible telescopic tube connection: extendable tube (Ø 125 mm) for core drilling of 129-140 mm and wall thicknesses of 300-580 mm, optionally extendable up to 780 mm.
Elegant look – easy care: brushed stainless steel surface – resistant to fingerprints and easy to clean.
Easy and safe installation: stainless steel weather protection grille with all-round rubber seal - reliably seals against the facade, no additional silicone application required.
Compatible and standard: suitable for standard connections with a diameter of 125 mm – ideal for modernisations and new buildings.
Areas of use: perfect for cooker hoods, ventilation systems, heat recovery and industrial exhaust systems.

81,00 €
10

NABER

NABER Thermobox 4022049 Backflow Valve / Heat Retention System Diameter 125 mm

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Thermobox heat retention system suitable for retrofitting existing Naber wall boxes and for vertical installation (exhaust air routing via the roof). Colour: black/silver. Note: The cooker hood must have an opening pressure > 65 Pa even at the smallest level

56,99 €