Whiting developed the first practical overhead roll up door for trucks and trailers in 1953.
Trailer roll up door spring tension.
How to tighten the tension on a roll up door.
Today whiting remains the world s leading designer and supplier.
Today whiting remains the world s leading designer and supplier in the industry with a full line of dry freight insulated and specialty roll up doors as well as laminated swing doors.
Whiting developed the first practical overhead roll up door for trucks and trailers in 1953.