We used the six inch to make up about a 2 inch gap tapered to zero over a ten foot distance but i am fairly sure the same gasket will work in your case.
Garage door bottom seal track sizes.
We have specially made t bottom weather seals that will close medium size to large gaps between your floor and door bottom.
We have many types of weather seal that will work with this retainer.
Our garage door threshold kits include your choice of 10 feet or 18 feet of threshold plus two tubes of threshold adhesive to secure it in place.
Like the top and side retainers the bottom retainers come in various shapes and dimensions.
54 x 1 3 4 flat pvc retainers.
Action industries rodent block garage door bottom seal kit with l shaped 1 3 8 in.
This type of garage door seal is a hard rubber plastic that creates a track for the side of the garage door to run through.
This type of garage door seal is usually used for heavy steel doors that screws cannot penetrate.
I just replaced the vinyl seal on my garage door for the exact same reason.
The seal fits snuggly around the door on both sides.
Bottom seal retainers on a garage door serve the same purpose.
Garage door bottom track garage door bottom retainer click the link below for an overview of garage door weather seal.
It is essentially a u with the garage door fitting inside.
Shop our commercial door weather strips.
Depending on the shape of the slots in the bottom retainers.
Additionally we have this in kit.
Going with the 4 or 6 inch gasket does not change the width at the bottom of the door only the depth or the gasket.
Other bottom seals are a little more intricate like the twin contact bottom seal.