Do your doors come with a cill?
Our steel door frames are 4 sided, with a welded DDA compliant threshold at the bottom. That is unless you choose to have a cut down service over 25mm, where we send the threshold loose to be installed on site.
If you need an additional cill for the door threshold and frame to sit on top of, we stock compatible steel cills for our doors made using 2mm galvanised steel.
See our steel door cill here