DOLLE 4 factories
Innovation and design
Select all sizes here. The trap door is a 56 mm high-insulated white trapdoor with 50 mm insulation. The trapdoor is a unique patented construction.
We know the importance of correct and easy installation and we have therefore gathered a wide range of useful information for you.
Should you need any further information or guidance regarding our products, please do not hesitate to contact us. We are happy to support you!