Master Header Logo


Master Brand Header 1
Master BLM 4800
Master BLM 4800

BLM 4800-6800

Professional blowers – metal

These professional metal air blowers support building and water damage drying. They are also equipped with a very powerful and energy saving fan.

BLM 4800 - 20cm, BLM 6800 - 30cm


Key features

  • Robust and durable construction
  • Metal casing
  • Easy to use and transport
  • High air flow
  • Motor with thermal protection
  • Possibility to connect flexible tubes on inlet and outlet side

Product specifications

Air flow


Max. air pressure


Fan type

1 x Axial

Fan speed


Power consumption


Power supply


Outlet diameter


Inlet diameter


Air current

Blow out/suction



Product size (l x w x h)

250 x 305 x 230

Box size (l x w x h)

265 x 335 x 350

Net/gross weight




Our tools


Master 3-year limited warranty

Register your Master product here to take advantage of the benefits of the 3-year limited warranty.

Accessories and consumables

Master PVC flex tube 4515 559
Master Top Badge

Product code: 4515.559

Accessory for BLM 4800

Master PVC flex tube 4515 560
Master Top Badge

Product code: 4515.560

Accessory for BLM 6800

Master Dust bag 4515 540
Master Top Badge

Product code: 4515.540

Accessory for BLM 4800, BL 4800

Master Dust bag 4515 541
Master Top Badge

Product code: 4515.541

Accessory for BLM 6800, BL 6800

Where to Buy Icon

Looking to buy?

Get in touch and we will connect you with the right office or dealer.

Looking for Spares Icon

Looking for spares?

The direct route to spare parts for your equipment.

Looking for Servicing Icon

Looking for servicing?

Contact us for help in finding the right service professional near you.

Related products

Master BL 4800
Master Top Badge

Professional blowers – plastic

Professional plastic air blowers support building and water damage drying. They can also eliminate and filter dirty air from the workplace.

Master DFB 16
Master Top Badge

Professional fans – battery powered

This quiet running, battery powered fan is light and compact and can be used in public places like restaurants, bars, at events, workshops, as well as offices and homes.

Master DF 30
Master Top Badge

Professional fans – metal

These professional, metal fans provide extra ventilation for indoor and outdoor events and also support drying, heating and cooling equipment.

Featured insights

Rsz 1master wdr shutterstock 1040733682
Master Bottom Badge

The quick guide to drying out buildings

Photo of Alan James
Alan James 5 min read
Master epoxy floor web
Master Bottom Badge

Discover the different methods to dehumidify building sites quickly and cost effectively

Photo of Katarzyna Cellary-Zinko
Katarzyna Cellary-Zinko 5 min read
Screed shutterstock 1802622883 web
Master Bottom Badge

How we can speed up drying times on vital building projects

Photo of Dirk Langer
Dirk Langer 2 min read

Enquire about this product

Complete your details below and the right person from our expert team will get back to you.
For service and spare parts enquiries please include serial number and product type in the Message field.