POLK INTERNATIONAL

Trailer with Swing Rear Door.

​"The TSI PLATE"​(Patent Pending)


Red Tagged Trailer Needing Service Before Use

​The Red Tag is simply inserted into the Sign Holder Assembly

Insert Card Indicating LOADED ROLL-UP DOOR

LOADED --- EMPTY

​​Click the Link below to learn the benefits of the TSI Plate,
​and an explanation of its INDICATORS.

Trailer with Roll-up Rear Door.

LOADED --- EMPTY

Insert Card Indicating EMPTY ROLL-UP DOOR