3 bags per pack. Suits Modern Day ducted models 2000, 3000, 4000

705mm long 260mm wide. Double pleated to expand out to 250mm deep. 
Collar dimensions 152mm wide x 166mm high. Hole diameter in cardboard = 54mm

These bags are a high quality replacement bag for the models listed above.
They feature the following:
- a heavy duty cardboard collar with rubber membrane for better a fit
- double walled for better strength and filtration
- double folded edge for better strength
- made from environmentally friendly paper