Ortho - which side faces the grass?

[Jeff Canes]

Picked a sample package 4x5 ortho last year open it for the first time a week ago and discovered that where no ID notches. One side is RED and other is Gray. It been years and I can’t recall which side faces the glass. I think the red does?

[JC1220]

Should be the dull looking side, whichever that is. Won't take too many photos to figure it out otherwise.:)

[Efergoh]

The dull gray side is the emulsion side.