The Twin air inlet is widely applicable in poultry, pigs and calves.

The Twin has a hinge point which is adjustable. Either you can put the hingepoint downwards; this way air will only pass along the upper side of the valve. Or you can put the hinge point in the middle; this way the air will go both, along the upper- and downside of the valve.

The frame is constructed out of the highest quality plywood. The air inlet is well insulated with 15 mm insulation foam. This foam also ensures a proper closing at the edges. Therfore the Twin air inlet is absolutely draught free.