You'll be surprised how much Tread Brackets will do for your stairs! Use below treads, installed as appliques. Stair Tread Brackets are reversible left to right so they will work for either side of your stairs.
You can also order Repeating Cornice Brackets (except Shelby, which has a turned Finial) in 3/8" or 3/4" thickness for use as Tread Brackets. (Use 'Comments' during Checkout if you want 3/8" thick Repeating Cornice Brackets.)
Dimensions list horizontal measurement first and are correct for 3/4" and 1" thick framed Brackets (as shown).
For 1-1/4" and 1-1/2" thick Brackets, please add 1/2" to both width and length. Drawings not to scale.