Ladder jacks are used to support planks between 2 ladders
The jacks mount to the front or back of the ladders
The ladders used must be Type I 250 lb. rated or above
The plank can be up to 20′ long and up to 20″ wide
The jacks fit on round or D-rung extension and straight ladders
Sold in pairs
Shipping weight = 12 lbs.