Sleeping area extension & access aid for the pop-top roof | roof bed in the Mercedes-Benz Marco Polo, Horizon, Activity W447 & Viano Marco Polo W639
Item no. 36469
- Room to stretch out: Turns the access opening into extra bed space.
- Climb up and down comfortably: Even with someone already in bed.
- Pillows and duvets stay up top: The board covers the access opening.
- Darker, quieter space: The cover reduces light and heater noise from below.
The bed extension board turns the pop-top access opening into extra sleeping and storage space and makes getting into and out of the roof bed easier. This removable board is designed for the Mercedes-Benz Marco Polo, Activity and Horizon W447, and the Viano Marco Polo W639.
More room in bed and easier access
The close-fitting board sits in the access opening. It makes getting into the upper bed easier even when someone is already lying there. Pillows, duvets and other items can rest on the additional surface instead of falling through the covered part of the opening.
The board is useful during the day, too. With the bed secured in its raised position, it provides a shelf for your phone, drinks and other everyday items. It folds down for compact storage when not in use.
Route warm air upstairs and reduce light from below
The manufacturer adapted the 1sternehotel version to the shop's heating duct system. A pass-through allows the Click & Heat auxiliary heating extension to reach the pop-top sleeping area. The opening can also accommodate other items. With the heating duct in place, warm air is not discharged immediately beside your head, reducing perceived airflow noise. The duct system itself requires neither an additional fan nor a separate power connection.
Covering the access opening also reduces light entering from the lower cabin and the perceived noise from the auxiliary heater fan beneath the driver's seat. Combined with the pop-top roof insulation, the board helps darken the upper sleeping area further.
Lightweight construction that folds away
The board has a hollow-cell honeycomb core covered in needle-punched felt. Its lightweight, robust construction supports the weight of two people. The aluminium support rail is also covered in needle-punched felt. There are no plastic lids or rings in the board that could leave impressions.
Dimensions when unfolded: 1,230 x 660 x 13 mm.
Dimensions when folded: 660 x 310 x 56 mm.
Made in Germany.
Fit without tools and allow time for the adhesive to cure
Clean the area around the USB socket with the supplied cloth, then stick the retaining bracket in place. Installation takes approximately five minutes and requires no tools. Wait approximately 24 hours before using the board to allow sufficient time for the adhesive bond to cure.
Remove from the opening before lowering the roof
Always remove the board from the access opening before lowering or closing the pop-top roof.
For transport, we recommend placing the unfolded board lengthways on the roof bed. Only the board and the Project Camper cab insulation should be transported there, with no additional items.
Choose the version that matches your vehicle
- Version 1: Bed extension board without heating duct for Mercedes-Benz Marco Polo, Activity and Horizon W447, and Viano Marco Polo W639.
- Version 2: Bed extension board with heating duct for Mercedes-Benz Marco Polo, Activity and Horizon W447 built from 2014.
- Version 3: Bed extension board with heating duct for Mercedes-Benz Viano Marco Polo W639 built from 2004 to 2013.
What is included with your chosen version
- One bed extension board that also assists access to the roof bed.
- One adhesive retaining bracket for fitting near the USB socket.
- Cleaning cloth for preparing the adhesive surface.
- With the relevant version: a heating duct for the W447 or W639 pop-top roof.
What is the bed extension board used for?
It is a removable, folding extension for the roof bed. Placed in the access opening, it provides extra sleeping and storage space and makes getting into and out of the bed easier, even when someone is already lying upstairs.
Which vehicles and versions does it cover?
The version without a heating duct is designed for Mercedes-Benz Marco Polo, Activity and Horizon W447, and Viano Marco Polo W639. Versions with a heating duct are offered for W447 built from 2014 and Viano Marco Polo W639 built from 2004 to 2013. Select the heating duct version that matches your vehicle.
How much weight can it support, and what is it made from?
The lightweight, robust construction supports the weight of two people. The board has a hollow-cell honeycomb core covered in needle-punched felt. Its aluminium support rail is also covered in needle-punched felt. There are no plastic lids or rings in the board that could leave impressions. The board is made in Germany.
What are the board's dimensions?
The unfolded board measures 1,230 x 660 x 13 mm. Folded dimensions are 660 x 310 x 56 mm.
How is the bracket fitted, and when can the board be used?
Clean the area around the USB socket with the supplied cloth, then stick the retaining bracket in place. Fitting takes approximately five minutes and requires no tools. Wait around 24 hours before first use so that the adhesive bond has sufficient time to cure.
What must be done before closing the roof, and how should the board be transported?
Always remove the board from the access opening before lowering or closing the roof. For transport, we recommend placing it unfolded lengthways on the roof bed. Only the board and Project Camper cab insulation should be placed there, with no additional items.
What is the pass-through in the board for?
The pass-through is adapted to the Click & Heat auxiliary heating extension and can also accommodate other items. The matching heating duct is included with the relevant versions. The duct system requires neither an additional fan nor a separate power connection. Warm air is not discharged immediately beside your head, reducing perceived airflow noise.
How does the board affect light and heater noise in the roof bed?
Covering the opening reduces light entering from the lower cabin and the perceived noise from the auxiliary heater fan beneath the driver's seat. Combining it with pop-top roof insulation helps darken the upper sleeping area further.
How can the board be used during the day?
With the bed secured in its raised position, the board serves as a shelf for a phone, drinks and other items. Pillows and duvets cannot fall through the covered part of the access opening.
What is included?
The package includes the bed extension board, an adhesive retaining bracket for the USB socket area and a cleaning cloth. Versions with a heating duct also include the matching duct for the W447 or W639 pop-top roof.
The order creation for optional installation service is done manually, in this case please do not order online.
| Brand | 50° Nord |
| Item No. | 36469 |
| Content | 1 Set |
| Condition | New |
| Weight | 4050 g |
| Customs tariff number | 87089997 |
| Manufacturer | ide-tec KG Erzweg 16 57299 Burbach Germany shop@50GradNord.com |














