About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

HausDek
Invisible bookshelf

The invisible bookcasefrom HausDek is a unique way to store books and adds a stylish design to any room. The floating shelves create the illusion that the books are hanging on the wall, making them the perfect solution for storing and displaying books and decorations. The white floating invisible wall shelves from HausDek are an ideal alternative to the traditional bookcase and allow you to make full use of the space on the wall. The product set consists of four invisible shelves, which are supplied with Fischer screws and plugs. In addition, you receive a mini spirit level and multilingual assembly instructions to make installation quick and easy . The invisible shelves are made of high-quality steel (Q235) with a white powder coating, making them very robust and able to support up to 10 kg. The invisible metal shelves can be used in any room or environment – in the living room, bedroom, kitchen, children’s room, desk or to store collections and more. One point of criticism is the unsustainable packaging made of foam foil and plastic.

Advantages

✅ Space-saving design
✅ Versatile in use

✅ Made from high-quality steel
✅ Holds up to 10 kg weight.
✅ Mounting material included.

Disadvantages

❌ Packaging not sustainable

The first impression

Packaging and contents

ℹ️ Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Product protectionCarton is sturdy, product sufficiently protected100 points
Sustainability PackagingCompact product packaging, too much plastic packaging80 points
Package contents & scope4x Floating wall shelf 125×125×70 mm
8x Fischer screws
8x dowels
1x mini spirit level
1x thank you note from the manufacturer
100 points
Instructions for useWritten in German, English, French, Italian and Spanish, easy to understand100 points
Total95 points
Weighting: 20%
*The maximum score is 100 points

The invisible bookcase from HausDek was delivered with two outer packages for our test. The product was in a neutral cardboard box on the outside and a small, neutral cardboard box on the inside. Both boxes were undamaged and could be opened easily without additional tools. The product set consisted of four wall shelves, eight Fischer screws, eight wall plugs and a small spirit level and was therefore complete and in perfect condition. The shelves were in perfect condition, without material defects or scratches and with a smooth surface. The wall shelves were wrapped in foam foil to protect them from scratches and ensure their stability. However, this packaging is not sustainable.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearanceVery good appearance, high-quality material and well thought-out design100 points
ProcessingVery good workmanship, the drill holes are well finished100 points
StabilityThe material thickness of 2 mm supports up to 10 kg.100 points
Sustainability of the productNo information on sustainability, but the product is robust and durable.100 points
Total100 points
Weighting: 20%
*The maximum score is 100 points
Invisible bookshelf from HausDek Unboxing

The invisible bookshelves from HausDek impress with their excellent visual appearance. The high-quality material and the well thought-out design of the shel ves ensure an attractive appearance, with the metal shimmering slightly. The workmanship of the shelves is also very good, even the drill holes are precise. The shelves also score highly in terms of stability – the material thickness of 2 mm allows the shelves to support weights of up to 10 kg . Although there is no specific information from the manufacturer regarding sustainability, the product is a sustainable investment due to its robustness and durability .

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkScore achieved*
AssemblySimple assembly. Tools required: Drill with 6 mm drill bit, folding rule and Phillips screwdriver.90 points
ProcessingHigh-quality finish, shelves are made of steel (Q235) with white powder coating.100 points
Aesthetics and interior designSophisticated design creates a floating effect, visually enhancing the room and saving space.100 points
ResilienceThe shelf is made of steel (Q235) and has a white powder-coated finish. It can hold up to 10 kg of books. The metal does not bend due to the increased thickness of 2 mm.100 points
DiversityShelf is suitable for small and medium-sized books, but not for large books. It can also be used as a plant or decoration holder.80 points
Total94 points
Weighting: 45%
*The maximum score is 100 points

The invisible bookshelf from HausDek is characterized by its simple assembly. In addition to the screws, dowels and spirit level supplied, you will need a drill with a 6 mm drill bit, a folding rule and a Phillips screwdriver. In our test, the shelves were quick and easy to assemble. The instructions for use consist of a picture and information on the tools required in five languages. The workmanship of the shelving unit is high quality, as it is made of steel (Q235) with a white powder coating . The sophisticated design creates a floating effect, which visually enhances the room and saves space. In terms of durability , the shelf is made of steel ( Q235) with a white powder coating. It can hold up to 10 kg of books without the metal bending due to the increased thickness of 2 mm. The shelf is suitable for small and medium-sized books, but not for large books. It can also be used as a plant or decoration holder, which underlines its versatility of use.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we examine how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioVery good performance in the upper price segment70 points
Rating cut4.8 out of 5.0 on Amazon90 points
Total80 points
Weighting: 15%
*The maximum score is 100 points

On the Amazon platform, consumers rate the product with an average of 4.8 stars. One criticism is that the support surface is a little too narrow. Many customers like the quality and design of the product. In our practical test, we were able to confirm that the stability was good, the design was good and the size of the support surface was not so large.

Prices of up to €27.47 are charged on the Internet for equivalent products. Very inexpensive products are available from as little as €15.99. The invisible bookshelf from Hausdek is therefore currently in the upper price segment with a price of €23.95. For the quality and performance received, the price-performance ratio isreasonable.

Overall result

WeightingScore achieved*
1. packaging & contents20%95 points
2. product processing & appearance20%100 points
3. in the practical test45%94 points
4. price/performance & consumer ratings15%80 points
Total93 points
*The maximum score is 100 points
Invisible bookshelf
of the brand
HausDek
achieved
93
Points in our test and therefore passed. The test was carried out in the test period
12/23
and is stored in our database under the licence number
231123005
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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Our product evaluations are carried out exclusively through direct, on-site tests. This ensures a detailed and specific examination of the product properties. You can find more information about the test procedure here.

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