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QO® and Homeline® Load Centers Indoor Load Centers–Dimensions, Knockouts Class 1130, 1170 / Refer to Catalog 1100CT0501 Indoor Knockout Information and Enclosure Dimensions Table 1.46: Enclosure Dimensions Dimensions Dimensions Box No. W H D Box No. W H D in. mm in. mm in. mm in. mm in. mm in. mm 1 3.81 97 6.72 171 3.00 76 13 5.88 149 13.12 333 3.38 86 2 4.81 122 9.30 236 3.19 81 14 14.25 362 20.92 531 3.75 95 3 4.81 122 9.30 236 3.19 81 15 20.00 508 50.00 1270 5.75 146 4 8.88 226 12.57 319 3.80 97 16 20.00 508 68.00 1727 5.75 146 5 14.25 362 14.92 379 3.75 95 17 20.00 508 53.00 1346 5.75 146 6 14.25 362 17.92 455 3.75 95 18 5.88 149 16.12 409 3.38 86 7 14.25 362 20.92 531 3.75 95 19 7.56 192 23.12 587 4.25 108 8 14.25 362 26.04 661 3.75 95 20 9.62 244 26.12 663 4.75 121 9 14.25 362 29.86 758 3.75 95 21 8.88 226 14.80 376 3.80 97 10 14.25 362 33.78 858 3.75 95 22 8.55 217 23.92 608 3.95 100 11 14.25 362 37.98 965 3.75 95 23 14.25 362 29.86 758 3.75 95 12 14.25 362 39.37 1000 3.75 95 Table 1.47: Knockout Information Knockouts Symbol A B C D E F G H I Conduit Size 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2