Item # 1: ( 050 - 60 ) Lineco Archival Mounting Corners 5/8" inch Part# L5330022 Lineco Corners and Strips mount light to moderate weight prints, photographs and documents without adhesives ever coming in contact with the artwork. When used correctly, they provide adequate support, and allow for the expansion and contraction of the art within the frame. Artwork can always be removed in its original, pristine condition. Item # 2: ( 050 - 60 ) Lineco Archival Mounting Corners 1 1/4 in. Part # L5330035 Lineco Corners and Strips mount light to moderate weight prints, photographs and documents without adhesives ever coming in contact with the artwork. When used correctly, they provide adequate support, and allow for the expansion and contraction of the art within the frame. Artwork can always be removed in its original, pristine condition. Item # 3: ( 050 - 60 ) Lineco Archival Mounting Corners 1-1/4 inch. Part #L5330034 Item # 4: ( 440 - 32 ) Tru Vue Museum Glass 2.5mm - 32x40 - 1 Lites Product Code: 483240A