Question about Interior Panels

[Sangix]

So,
Buying parts for my interior after i hit a few junkyards and couldnt find what i needed, and so looking at this

http://www.courtesyparts.com/240sx-part ... _3814.html

i need 68520 the panel for the cd deck, and 68470 the mask for the radio,
but at the bottom i noticed this guy

http://www.courtesyparts.com/68475m-poc ... 38408.html

does anyone know what this is or where it goes?

thanks in advance

[Syrus33]

it is a Din pocket, it goes under or above the radio in one of the two din's

[Sangix]

so its just an alternitive for the radio mask?