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BLC 4000 Ceiling air inlet Horizontal ceiling inlet Single and double Twin inlet shaft
Flash 3300 ventilation slide X-Stream wall inlet BL 4500 wall inlet BL 6200 wall inlet Flash BP wall inlet 4-Seasons Twin wall inlet
Black Line Tunnel inlet BLT Tunnel Twin and Tunnel Flex
Blackout side windows Roof window Blackout ridge Daylight air inlets
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Ceiling inlets > Single and double Twin inlet shaft

Single and double Twin inlet shaft

Ceiling inlets

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Benefits of Single and double Twin inlet shaft

For ventilation where side vents are not possible

Available in any desired size

Common models

Type Installation dimensions Net surface Capacity Hole sizes
L W D 10 Pa 20 Pa 30 Pa B H
PLAFH4000 400 mm 620 mm 200 mm 1950 cm2 2800 (m3/hr) 4000 (m3/hr) 4900 (m3/hr) 626 mm 406 mm
PLAFH5000 400 mm 770 mm 200 mm 2350 cm2 3600 (m3/hr) 5000 (m3/hr) 6200 (m3/hr) 776 mm 406 mm
PLAFTE5000 320 mm 940 mm 550 mm 2350 cm2 3600 (m3/hr) 5000 (m3/hr) 6200 (m3/hr) 946 mm 326 mm
PLAFTD11000* 696 mm 1200 mm 400 mm 5400 cm2 8000 (m3/hr) 11000 (m3/hr) 14000 (m3/hr) 1206 mm 702 mm

The best ventilation solution for closely built barns

Single Twin shaft

The single Twin shaft extends much further below the ceiling and has the same air control as the Twin vent we know. For example, this air inlet is used when normal side inlets are installed on one side of the barn but this is not possible on the other side. This Single Twin Inlet Shaft is available in any size.

Double Twin shaft

This air inlet is used when side inlets cannot be installed, for example because the barns are built against each other. This vent is mounted in the center of the barn under sandwich panel shafts. The air then goes from the middle to the side walls. This Double Twin Inlet shaft is available in any size.