Question about new rimmed tank

[justaguy93]

I have a new 20 gallon long that I am about ready to set up and upon closer inspection it appears as though part of the bottom frame is missing the silicone. On one of the long ends a good 10" portion of the bottom frame member does not look to have any silicone between it and the bottom pane of glass. This is my first aquarium so I'm hoping someone can chime in on if this is something to be concerned about? I really don't want to set this up and have a blow out down the road as this will be put over a hardwood floor. Please see the image links for an example of where it appears the silicone is not present...