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DU-101
opening 11 3/4" x 13"
DU-102
opening 10 3/4" x 14 1/2"
DU-103
opening 23 7/8" x 25 7/8"
DU-104
opening 6 7/8" x 8 7/8"
DU-105
opening 13" x 16 5/8"
DU-106
opening 20 1/2" x 26 3/8"
DU-107
opening 8 3/4" x 10 3/4"