4 x 12 Stair Stringers
For stairs with 3 x 12 or 2 x 12 stair treads you will need to use 4 x 12 stair stringers. These stair stringers are used for interior or exterior stairways.
For stairs with 3 x 12 or 2 x 12 stair treads you will need to use 4 x 12 stair stringers. These stair stringers are used for interior or exterior stairways.