Depending on the filter model most 1" depth filters are going to have an actual depth between 3/4"-7/8".
For 2" filters the depth will be 1-5/8". Not all filter models are available in 2" depth. If the 2" option is available there will be a dropdown to select the depth. Otherwise filters will be made in 1" depth.
If you have any questions or concerns please let us know.