Flexible Air Duct 7.6m Diameter 250 mm for Master BLM 4800, Master 4515.559

Quick Facts – Master 4515.559 Flexible Air Duct 7.6m

• Brand: Master
• Model: 4515.559
• Type: Flexible air duct
• Diameter: 250 mm
• Length: 7.6 m
• Compatibility: Master BLM 4800

The Master 4515.559 is a flexible air duct with a 250 mm diameter and 7.6 metres in length, designed as an accessory for the Master BLM 4800 warm air heater. The duct is used to direct warm air from the heater to the area where heat is required — into tents, buildings under construction, industrial spaces or other locations where placing the heater directly is not practical. The flexible construction makes it straightforward to route the duct around obstacles and adapt the run to the available space without custom duct installations.

At 7.6 metres, the duct covers the distance required in most practical installation scenarios for the BLM 4800. The 250 mm diameter matches the heater's air outlet, ensuring airflow is not restricted by the connection during operation. Master is one of the world's leading manufacturers of portable climate solutions with over 50 years of experience in professional warm air heaters.

The Master 4515.559 is the manufacturer-recommended duct accessory for the Master BLM 4800 and provides a reliable, straightforward solution for directing warm air in temporary and semi-permanent heating installations across Europe.

What is the Master 4515.559 and why should you choose it?

The Master 4515.559 is a flexible air duct with a 250 mm diameter and 7.6 m length, matched to the Master BLM 4800 warm air heater. The accessory allows the heater's position to be separated from the space being heated, increasing installation flexibility and reducing noise levels in the working area. The flexible construction simplifies routing around obstacles and through tight spaces. Selecting a correctly dimensioned, purpose-matched duct ensures that the heater's full capacity is delivered without airflow losses at the connection.

Which environments is the Master 4515.559 suited for?

The Master 4515.559 suits temporary heating installations on construction sites, in industrial premises, warehouses, tents, event spaces and similar locations across Europe where the Master BLM 4800 is in use. The duct length and flexibility make it suitable for situations where the heater must be positioned outside the space being heated, or where warm air needs to be routed around structural elements and obstacles.

Technical Specifications

Suitable for: Site managers, installation technicians, event technicians and equipment hire companies using the Master BLM 4800 for temporary heating of premises and worksites.

Industries: Construction, industrial and warehouse operations, events and temporary installations, heating equipment hire.

Frequently Asked Questions (FAQ)

Is the Master 4515.559 flexible air duct compatible with the Master BLM 4800 warm air heater?

Yes, the Master 4515.559 is an accessory designed for use with the Master BLM 4800. The duct has a 250 mm diameter matching the heater's air outlet and is 7.6 m in length. The correct diameter ensures that the BLM 4800's airflow is not restricted at the connection point during operation.

How long is the Master 4515.559 air duct and what distance can it cover from the heater?

The Master 4515.559 has a length of 7.6 m and a diameter of 250 mm. It covers the distance required in most temporary heating installations where the Master BLM 4800 is positioned outside the space being heated — for example, outside a tent, a building under construction or an industrial premises.

What is the advantage of a flexible air duct like the Master 4515.559 compared to a rigid duct section?

The Master 4515.559 flexible air duct with its 250 mm diameter and 7.6 m length can be bent and routed in any direction without junction fittings or custom sections. This shortens installation time and makes it easier to direct warm air around obstacles, through doorways and into confined spaces — situations where rigid duct requires more planning and additional components.