Wholesale rectangular duct fan (RKF500*300) 

Rectangular duct fans are intended for ventilation of medium size and large rooms where space is limited. The rectangular air duct fans are designed to fit within rectangular air ducts. Its primary purpose is to enhance airflow in heating, ventilation, and air conditioning (HVAC) systems. 

The rectangualr duct fans are applicable in residential, commercial and industrial areas, including among others: bathrooms, toilets, utility rooms, swimming pools, gyms and warehouses, coffee bars, bars, restaurants, shops, schools, offices, factories, pubs, hotels, shopping centres, entertainment centres, workshops and local ventilation.

Users before using the type of roof fans are obliged to read carefully the operating and maintenance manual. 

- Casing

The fan casing are manufactured from heavy gauge galvanized sheet steel. All models incorporate and inspection cover that can be removed to access the motor/impeller assembly without having to remove the complete casing from the ducting.

- Impeller
all models incorporate direct-drive low pressure forward curved centrifugal impellers. The impeller is factory matched to the motor and complete assembly is dynamically balanced 1940 standards.

- Motors
all models incorporate asynchronous induction motors in die cast aluminum. The following specification apply.
single phase 220V 50Hz, three phase 220V/380V 50Hz
IP55 protection
Class F insulation
Remote terminal box

Features  

Installation in suspended ceiling assembling with rectangular duct
Forward curved centrifugal impeller
ABS (FR) connection box 
casing made of galvanized steel plate with preset installation hole 
External rotor motor with low temperature rise
Motor is equipped with automatic reset thermal overload protection
NSK ball bearing, acceptable for continuous operation of 5000h
External rotor motor and impeller is eversible, easy for cleanning and maintenance 
Operating temperature range -20°C-50°C
Insulation Class F 
Enclosure class IP44  

Dimension Table (mm)

Feature parts details

casing made of galvanized steel plate with preset installation hole    

Create a comfortable and quiet environment