Folio measures 5 1/2" x 8 1/2".  I used Echo Park

Paper Collection (America)

 Mini Album measures 8 1/4" x 5".  I used Authentique Horray

Paper Collection.  I watched a tutorial on you tube, there weren't

any instructions given on making the slider page.  I made my album

a little larger.  Each page has a middle sliding panel that moves from

side to side and you have a flip up photo matt under the slider panel.

You can fit 4 photos on the slider panel pages.  I wanted lots of room 

for photos so each base page has a side photo matt.  You can fit

40 or more photos in this album.

 The panel on the last two pages moves side to side.