Best Bullauge Fenster 2026

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Last Updated - 03.02.2026

Best Choice

01

TWHZSAI

TWHZSAI Rotating Round Window Aluminum Alloy Porthole Window Tempered Glass Wall Window with Handle Casement Window for Home Kitchen White 1.35 Inch

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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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Wide application: suitable for new buildings or renovations, suitable for home kitchens, bathrooms, balconies, offices and cafes. Its sleek design and functionality make it a versatile addition to any room.
Recessed Tempered Glass: This window is made of recessed tempered glass, providing the highest stability and safety. It is shatterproof and provides a clear, distortion-free view. The combination of glass and metal gives the window an enchanting charm and highlights the beauty and atmosphere.
EASY INSTALLATION Our windows come with all mounting accessories. All you need to do is insert the glass window into the window opening, screw in the screws at the top of the window frame and fill the gap with foam adhesive. Foam glue must be purchased from you.
Durable Materials High quality tempered glass, aluminum alloy, it provides unparalleled corrosion resistance and resistance to water and heat. It stands the test of time and delivers consistent performance, so you will be satisfied for many years.
360° Rotatable Flush Mounting: The innovative design of the rounded swivel window with center axis rotates 360° to the left and features center axis rotation and hovering. For precise air control in any environment. The ergonomic handle is user-friendly, the window is easy to open and close.

102,58 €
Value for Money

02

MLS

MLS Porthole B4000 Stainless Steel Porthole for Doors, Made of Stainless Steel, VSG Safety Glass, Suitable for 40 mm Thick Doors, Both Sides Visible Mounting Screws, 300 mm Diameter, Matte Glass

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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

Versatile Compatibility The porthole is suitable for door leaves with a thickness of 40 mm (+/- 2 mm) and can be installed in various types of interior doors. The possibilities are almost unlimited
Stylish design: the two metal rings made of brushed stainless steel enrich your rooms with a contemporary and appealing appearance. The round window is eye-catching and an elegant detail for your doors that transforms them and gives it a new character. The modern design is accentuated and highlighted by the visible mounting screws on both sides
Flexible use: with our door portholes you can give your living room or work space a modern design - and without much effort! These high quality portholes will enhance the interior doors of your office, study, doctor's office or laboratory. Whether you choose clear glass or frosted glass, the porthole window gives you the perfect solution to transform your work area
Easy installation: you will find all the necessary materials for assembly (2 metal rings in stainless steel, 1 glass filling VSG, mounting material). Simply follow the detailed installation instructions to easily install the stainless steel porthole into your door (technical changes subject to change)
Direct from the manufacturer: our stainless steel porthole B4000 impresses with its first-class quality. The glass filling of the porthole is made of VSG safety glass, which is both robust and durable. This also allows flexible mounting at any height

81,00 €
03

Lucky Lamb

Lucky Lamb® garden scout – the fence window for dogs, cats, or other pets. A porthole made of robust acrylic also for play house or dog kennel.

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9.4

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

Safety: Can help prevent your dog from jumping over the fence, reducing the risk of injury to your pet
Quality: Made of transparent and high-quality acrylic and the mounting material made of stainless steel.
Neighbourhood: Reduces the barking of your dog and protecting your nerves and those of the neighbourhood.
Measurements: Specially designed for pet and child, with a diameter of 31.5 cm it offers the perfect size for any user
Compatibility: It is intended to be mounted on both the fence, dog kennel, play house or tree house. The decorative ring must be attached in black or silver.

49,00 €
04

MLS

MLS Porthole B5000 for doors, door windows made of stainless steel, VSG safety glass, one-sided installation on door leaf, without cutting, visible screws on one side, 1 piece, 1 ring, diameter 250

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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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Main highlights

Wide Applications The porthole is great for various rooms and interior doors, be it in rooms, kitchens, bathrooms, offices, studies or doctor's offices. The round glass filling made of VSG glass provides privacy and light transmission and can be mounted at different door heights
Transform your rooms: rely on quality and modern design to create a magical and impressive atmosphere in any room with our door portholes. The combination of flat profile, brushed stainless steel and clear glass gives your doors a contemporary look
Elegant Appearance The porthole comes with a brushed stainless steel metal ring, which not only ensures stability, but also an elegant appearance. The screws visible on one side made of the same material contribute to the overall aesthetic effect
Easy to install: The one-sided installation without cutout allows for easy installation directly on the door leaf. Thanks to this easy installation option, you save time and effort. Our porthole comes complete with a stainless steel metal ring, a glass filling VSG and the required mounting material. You will receive everything you need for an easy and successful installation (technical changes subject to change)
Direct from the manufacturer: our stainless steel door window is characterised by its perfect finish. Every detail is carefully crafted to ensure first-class product quality. With its extremely flat design, our porthole fits seamlessly into any interior door. It gives your home or office a contemporary and impressive character

40,00 €
05

QWORK

QWORK® Marine Porthole Window, Porthole Round 26.5 cm, Black Portlight, for Boats, Yachts, Motorhomes

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9.1

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

VERSATILE USE Ideal for boats, yachts, RVs and as sightseeing windows.
Premium Material Made of durable ABS and thick tempered glass for maximum durability.
EFFECTIVE WATERPROOF Equipped with durable rubber ring seals for effective protection from water.
EASY INSTALLATION Pre-drilled countersunk mounting holes for quick and easy installation (screws not included).
DURABLE ACCESSORIES Cast and polished 316 stainless steel and corrosion free synthetic fittings for long lasting use.

39,99 €
06

GAESHOW

GAESHOW 26.5 cm Marine Porthole Round Black Portlight Stalinite Window Universal for Boat Yacht Replacement Boat Accessories

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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

Waterproof: porthole window contains durable rubber ring seals for strong sealing, effectively waterproof and reliable to use. Accessories made of cast and polished 316 stainless steel, corrosion-free synthetic fittings.
Material: 10 inch pre-drilled porthole window material is ABS, 4 mm thick tempered glass, sturdy and durable, not easy to damage. The two ports can be detached so you can swing the porthole open.
Easy to use: boat replacement window durable waterproof seals. Tempered glass for strength, clarity and chemical resistance. The two fittings can be loosened to swing the porthole open.
EASY TO INSTALL: Pre-drilled countersunk mounting holes (screws not included). Also perfect as a replacement for the old boat porthole. Please carefully check the shape and size of the product before purchasing.
APPLICATIONS: Round porthole window with round tempered glass opening for round porthole for boats/yachts/motorhomes touring sightseeing window.

35,59 €
07

Marine Nautical Store

Medieval Replicas 12" Maritime Antique Porthole Round Window Glass Nautical Boat Ship Porthole Decor

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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

Working porthole that can be opened and closed.
Measures 12 inches (diameter) and glass 7.8 inches (diameter).
Handmade, some imperfections possible
Excellent hinged wall decor for any nautical or pirate decor
Antique brown finish (as pictured)

45,60 €
08

MLS

MLS Porthole B4000, Heavy Duty Aluminium, VSG Safety Glass, Suitable for 40 mm Thick Doors, Visible Mounting Screws on Both Sides, 300 mm Diameter, Clear Glass, Black

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8.7

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

Versatile Compatibility The porthole is suitable for door leaves with a thickness of 40 mm (+/- 2 mm) and can be installed in various types of interior doors. The possibilities are almost unlimited
Stylish design: the two aluminium rings will enhance your rooms with a contemporary and appealing appearance. The round window is eye-catching and an elegant detail for your doors that transforms them and gives it a new character. The modern design is accentuated and highlighted by the visible mounting screws on both sides
Flexible use: with our door portholes you can give your living room or work space a modern design - and without much effort! These high quality portholes will enhance the interior doors of your office, study, doctor's office or laboratory. Whether you choose clear glass or frosted glass, the porthole window gives you the perfect solution to transform your work area
Easy installation: you will find all the necessary materials for installation (2 aluminium rings, 1 glass filling VSG, mounting material). Simply follow the detailed installation instructions to easily install the aluminium porthole into your door (technical changes subject to change)
Direct from the manufacturer: our aluminium porthole B4000 impresses with its first-class quality. The glass filling of the porthole is made of VSG safety glass, which is both robust and durable. This also allows flexible mounting at any height

73,00 €
09

MLS

MLS Porthole B4000 Heavy Duty Aluminium Door Porthole - Suitable for 40mm Thick Doors - Visible Fixing Screws - 250mm Diameter - Clear Glass, Silver

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8.6

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.

Show more
Main highlights

Versatile Compatibility The porthole is suitable for door leaves with a thickness of 40 mm (+/- 2 mm) and can be installed in various types of interior doors. The possibilities are almost unlimited
Stylish design: the two aluminium rings will enhance your rooms with a contemporary and appealing appearance. The round window is eye-catching and an elegant detail for your doors that transforms them and gives it a new character. The modern design is accentuated and highlighted by the visible mounting screws on both sides
Flexible use: with our door portholes you can give your living room or work space a modern design - and without much effort! These high quality portholes will enhance the interior doors of your office, study, doctor's office or laboratory. Whether you choose clear glass or frosted glass, the porthole window gives you the perfect solution to transform your work area
Easy installation: you will find all the necessary materials for installation (2 aluminium rings, 1 glass filling VSG, mounting material). Simply follow the detailed installation instructions to easily install the aluminium porthole into your door (technical changes subject to change)
Direct from the manufacturer: our aluminium porthole B4000 impresses with its first-class quality. The glass filling of the porthole is made of VSG safety glass, which is both robust and durable. This also allows flexible mounting at any height

62,00 €
10

MLS

MLS Porthole B4000 AN for Doors, Made of Robust Aluminium, with VSG Safety Glass, Suitable for 40 mm Thick Doors, Mounting Screws Visible on Both Sides, Natural Aluminium, Diameter 250 mm, Matte Glass

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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

Robust VSG glass: the glued laminated safety glass (VSG) not only offers high stability, but also additional protection against breakage and splinters. This makes the round window a durable yet stylish solution for your doors
Perfect fit for 40mm door panel thickness: designed to fit door leaves with a thickness of 40mm (±2mm), the aluminium porthole allows for easy installation. It is ideal for interior doors in residential and commercial premises and provides elegant light transmission
ELEGANT DESIGN WITH ALUMINIUM RINGS Two rings in matte aluminum finish give the door porthole a classy and modern appearance. The precisely crafted elements harmonise with different door styles and underline a high-quality design
EASY INSTALLATION WITH VISIBLE SCREWS - The mounting hardware is included and allows for easy installation. The screws visible on both sides ensure a stable connection and at the same time set subtle, industrial design accents
Direct from the manufacturer: The B4000 AN porthole impresses with its outstanding build quality and a robust construction. The high-quality materials ensure a long service life and an attractive look for modern and classic door designs

50,00 €