KANSAS CITY, Mo. - Ruskin Air & Sound Control has increased prices on all aluminum products by 4 percent. The increase is effective immediately.

A 4 percent increase has also been announced for all aluminum products from Swartwout, a Ruskin division. Swartwout manufactures steel and fiberglass control dampers, and aluminum and fiberglass louvers for the industrial HVAC and process market.

Ruskin manufactures dampers, louvers and sound-control products for the HVAC and architectural markets.