Push Air Down, or Pull It Up Most large ceiling fans do one job: push air down onto the stock in summer. This one reverses. Run in the forward direction it creates a downward column for cooling; run in reverse it lifts warm air from the ridge and pushes it out towards the walls, which is what a ...

An Exhaust Fan That Can Be Turned Down Most agricultural exhaust fans run at one speed: full. That is fine in July and wasteful in April, when a little air movement would do and the motor still draws its rated power. This unit is built around a brushless EC motor with electronic speed control from ...

One Box, One Gate, No Missing Parts Most gate failures are assembly failures. A handle bought separately does not match the spring, the spring does not match the insulator, and the person fitting it spends an afternoon making brackets. This set removes that problem: everything needed to hang a ...

Stopping Cross Sucking Before It Becomes A Habit A calf that sucks on a penmate's ear, navel or udder causes real damage: hair loss, infection, and in group housing a chain of copycat behaviour that spreads through the pen within days. How a nose ring weaner works The weaner sits across the muzzle, ...