photo albums: The Pioneer(r) #ST-400 3-Ring Photo Album comes filled with 100 pages which is enough to hold-up to 400 4" x 6" photos. Quality 1.50" D-rings binding spaced 2.50" apart Displays two 4" x 6" photos per page (2up/4-at-a-time) Book includes 100 pages for 400 4x6 photos Features a memo area strip between photos (insert size is 6" x 1.50") Replacement pages model #STR available separately (see ACCESSORIES) Overall dimensions 8-3/8" (W) x 10-7/8" (H) x 3" (D) Pioneer(r) albums are archival quality acid free photo safe Produced by Pioneer(r). 023602640351 - ST400/NB-NavyBlue