welcome to the new mounting kit section.
Installation and mounting kits
The standard installation method for Rosahl membrane dehumidifiers is inside the enclosure or cabinet they are to dehumidify. However, for small enclosures, mounting the dehumidifier externally can be beneficial.
In such cases, installation kits are available that reposition the membrane to remove the moisture. Kits for internally mounting membranes are also available. There are three types of mounting kit depending on the membrane type and whether it is mounted inside or outside the enclosure. They are:
External mounting kits for small enclosures
New Pre-Assembled Membrane Dehumidifier
Internal mounting kit for MDL-Series
Internal mounting kits for all M-Series models
Complete mounting sets for Rosahl membranes
Mounting kits streamline installation, allowing you to order a complete setof parts with one part number—including multi-part mounting mould, membrane dehumidifier, VREG2 power adapter, gaskets, fixing screws, and cable crimps. All components remain available for individual or combined ordering.
M-Series external mounting sets for M-1J1R to M-3J1R and MDL-3
For small enclosures, mounting the dehumidifier externally can be beneficial. These special external mounting kits rotate the membrane to ensure the correct the moisture outflow. They are also suitable for drying 3D print filament like the Bambu Labs AMS and similar automated feeding systems.
The complete set comprises a three part mould that holds the membrane and ready cabled VREG2 (VRS330 or VRS-330) power adapter board in place. A gasket and sealing ring are also included in the kit. The included M-5PKT includes the fixings.
| Part number | M-1J1R-SET | M-2J1R-SET | M-3M1R-SET | M-3J1R-SET | MDL-3-SET |
|---|---|---|---|---|---|
| - Comprises of: | |||||
| - Membrane | M-1J1R | M-2J1R | M-3M1R | M-3J1R | MDL-3 |
| - Fixing and cabling connector kit | M-5PKT | M-5PKT | M-5PKT | M-5PKT | M-5PKT |
| - External mould (3-part) + seal | M1J-COM | M2J-COM | M3M-COM | M3J-COM | MD3-COM |
| - VREG2 wired USB power adapter | VRS-330 | VRS-330 | VRS-330 | VRS-330 | VRD-330 |
NEW Pre-Assembled Membrane Dehumidifiers
Streamline your setup with our CE/UKCA-certified Rosahl dehumidifiers—pre-assembled for fast, hassle-free installation.
Available in five sizes, they’re designed to protect enclosures up to 250 litres. For applications requiring relative humidity below 40%—such as drying 3D printer filament—it is essential to consult our selection guide to ensure optimal performance. Choosing the right model helps avoid underperformance and ensures consistent moisture control.
MDL internal mounting sets for MDL-Series
The internal mounting sets for the MDL-Series also offer a simple mounting solution. A 3mm thick stainless-steel plate holds the membrane firmly in position against the cover, and the sealing gaskets prevent moisture intrusion. Using the same fixings, a separate flat plastic plate attaches to the outside of the enclosure to provide ventilation and protect the membrane’s outside operating surface. This set can be used with the Rosahl rain cover if required.
| Part Number | MD3-SET | MD5-SET | MD7-SET | ||
|---|---|---|---|---|---|
| Comprises of | |||||
| - Membrane | MDL-3 | MDL-5 | MDL-7 | ||
| - Fixing and cabling connector kit | M-5PKT | M-5PKT | M-5PKT | ||
| - Flat plastic external cover plate | MD-3CVP | MD-5CVP | MD-7CVP | ||
| - Internal retaining plate & two gaskers | MDL-3KIT | MDL-5KIT | MDL-7KIT | ||
| - VREG2 power adapter board | VREG2 | Order separately LS75-3.3 | Order separately LDA30F | ||
| - VREG2 Mounting BaseVREG2 mount | VR-FMC |
VREG2 USB-C power adapter boards
VREG2 are compact power adapter boards used with a USB power source (not PD types) and adapt it to 3V DC suitable for the Rosahl membranes. They have an onboard USB-C connector. They are suitable for use with all PD, RD and RS small dehumidifiers and also, the M-IJ, M-2J M-3M and M-3J Series and MDL-3 membranes.
VR-FMC (VREG2 Mounting)
VR2-FMC is a compact mounting base for use the VREG2 USB-C power adapter board. The power on LED is visible when mounted.
Universal fixing kit
The M-5PKT fixing kit is compatible with all membrane mounting kits excluding the M-7J1R and M-10-J1R. It includes 6 x M3 20mm bolts, 4 x M3 30mm bolts, 6 x M3 35mm bolt plus six nuts and washers. Also included are cable crimps the membranes.
The M-7PKT fixing kit is compatible with the membrane mounting kits for the M-7J1R and M-10-J1R. It includes 8 x M4 20mm bolts plus eight nuts and washers. Also included are cable crimps the membranes.
Moulds
We use 3D printers to produce our moulds using black PETG. Other colours are available on special order (min. 8 units per colour). Similar moulds are also available for free download from the Internet.
Get help
At micro-dehumidifier.com we have years of experience in working with and applying Rosahl micro dehumidifiers.
If you want help or assistance, contact us
M-Series internal mounting sets for all models M-1J through M-10J
The internal mounting sets for the M-Series offer a simple mounting solution. A flat clip cover attaches to the inside surface of the membrane to reduce the risk of accidental damage. A separate flat plastic plate attaches to the outside of the enclosure to provide ventilation and protect the membrane’s outside operating surface. This set can be used with the Rosahl rain cover if required
| Part number | M-1JSET | M-2JSET | M-3MSET | M-3JSET | M-5JSET | M-7JSET | M-10JSET |
|---|---|---|---|---|---|---|---|
| Comprises of: | |||||||
| - Membrane | M-1J1R | M-2J1R | M-3M1R | M-3J1R | M-5J1R | M-7JM1R | M-10J1R |
| - Fixing and cabling connector kit | M-5PKT | M-5PKT | M-5PKT | M-5PKT | M-5PKT | M-7PKT | M-7PKT |
| - External cover plate and internal protector | M1J-RPT | M2JRPT | M3M-RTP | M3J-RPT | M5J-RPT | M7J-RPT | M10J-RPT |
| - USB power adapter VREG2 | VREG2 | VREG2 | VREG2 | VREG2 | Order separately LS75 power supply | Order separately LDA30F power supply | Order separately BWB3.3SX-U1 |
| - VREG2 Mounting Base VREG2 mount | VR-FMC | VR2-FMC | VR2-FMC | VR2-FMC | X | X | X |
Rosahl
micro-dehumidifier
micro-Entfeuchter
micro-déshumidificateur
micro-deshumidificador
Westside International Ltd
Registered in England
Registration No. 4018025
VAT No. 768327395
EIN 98-1234498