Specialty Windows

Window Sizes

Half Round Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
RT 0603 23 5/8 X 11 13/16 24 3/8 X 12 9/16 600 X 300 619 X 319
RT 0735 27 9/16 X 13 3/4 28 5/16 X 14 1/2 700 X 350 719 X 369
RT 0804 31 1/2 X 15 3/4 32 1/4 X 16 1/2 800 X 400 819 X 419
RT 0945 35 7/16 X 17 11/16 36 3/16 X 18 7/16 900 X 450 919 X 469
RT 1005 39 3/8 X 19 11/16 40 1/8 X 20 7/16 1000 X 500 1019 X 519
RT 1206 47 1/4 X 23 5/8 48 X 24 3/8 1200 X 600 1219 X 619
RT 1407 55 1/8 X 27 9/16 55 7/8 X 28 5/16 1400 X 700 1419 X 719
RT 1608 63 X 31 1/2 63 3/4 X 32 1/4 1600 X 800 1619 X 819
RT 1809 70 7/8 X 35 7/16 71 5/8 X 36 3/16 1800 X 900 1819 X 919
RT 2010 78 3/4 X 39 3/8 79 1/2 X 40 1/8 2000 X 1000 2019 X 1019
RT 2412 94 1/2 X 47 1/4 95 1/4 X 48 2400 X 1200 2419 X 1219
RT 2613 102 3/8 X 51 3/16 103 1/8 X 51 15/16 2600 X 1300 2619 X 1319
RT 2814 110 1/4 X 55 1/8 111 X 55 7/8 2800 X 1400 2819 X 1419
RT 3015 118 1/8 X 59 1/16 118 7/8 X 59 13/16 3000 X 1500 3019 X 1519

Extended Half Round Windows

Unit Sizes
Model Number Unit O.S.M. (imperial) Rough Opening (imperial) Unit O.S.M. (metric) Rough Opening (metric)
ER 0810 31 1/2 x 39 3/8 32 1/4 x 40 1/8 800 x 1000 819 x 1019
ER 0812 31 1/2 x 47 1/4 32 1/4 x 48 800 x 1200 819 x 1219
ER 0814 31 1/2 x 55 1/8 32 1/4 x 55 7/8 800 x 1400 819 x 1419
ER 1010 39 3/8 x 39 3/8 40 1/8 x 40 1/8 1000 x 1000 1019 x 1019
ER 1012 39 3/8 x 47 1/4 40 1/8 x 48 1000 x 1200 1019 x 1219
ER 1014 39 3/8 x 55 1/8 40 1/8 x 55 7/8 1000 x 1400 1019 x 1419
ER 1016 39 3/8 x 63 40 1/8 x 63 3/4 1000 x 1600 1019 x 1619
ER 1018 39 3/8 x 70 7/8 40 1/8 x 71 5/8 1000 x 1800 1019 x 1819
ER 1212 47 1/4 x 47 1/4 48 x 48 1200 x 1200 1219 x 1219
ER 1214 47 1/4 x 55 1/8 48 x 55 7/8 1200 x 1400 1219 x 1419
ER 1216 47 1/4 x 63 48 x 63 3/4 1200 x 1600 1219 x 1619
ER 1218 47 1/4 x 70 7/8 48 x 71 5/8 1200 x 1800 1219 x 1819
ER 1414 55 1/8 x 55 1/8 55 7/8 x 55 7/8 1400 x 1400 1419 x 1419
ER 1416 55 1/8 x 63 55 7/8 x 63 3/4 1400 x 1600 1419 x 1619
ER 1418 55 1/8 x 70 7/8 55 7/8 x 71 5/8 1400 x 1800 1419 x 1819
ER 1616 63 x 63 63 3/4 x 63 3/4 1600 x 1600 1619 x 1619
ER 1618 63 x 70 7/8 63 3/4 x 71 5/8 1600 x 1800 1619 x 1819
ER 1818 70 7/8 x 70 7/8 71 5/8 x 71 5/8 1800 x 1800 1819 x 1819
ER 2418 94 1/2 x 70 7/8 95 1/4 x 71 5/8 2400 x 1800 2419 x 1819

Quarter Round Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
QR 505 19 11/16 x 19 11/16 20 7/16 x 20 7/16 500 x 500 519 x 519
QR 606 23 5/8 x 23 5/8 24 3/8 x 24 3/8 600 x 600 619 x 619
QR 909 35 7/16 x 35 7/16 36 3/16 x 36 3/16 900 x 900 919 x 919
QR 1010 39 3/8 x 39 3/8 40 1/8 x 40 1/8 1000 x 1000 1019 x 1019
QR 1212 47 1/4 x 47 1/4 48 x 48 1200 x 1200 1219 x 1219
QR 1414 55 1/8 x 55 1/8 55 7/8 x 55 7/8 1400 x 1400 1419 x 1419

Extended Quarter Round Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
EQ 0510 19 11/16 x 39 3/8 20 7/16 x 40 1/8 500 x 1000 519 x 1019
EQ 0512 19 11/16 x 47 1/4 20 7/16 x 48 500 x 1200 519 x 1219
EQ 0612 23 5/8 x 47 1/4 24 3/8 x 48 600 x 1200 619 x 1219
EQ 0614 23 5/8 x 55 1/8 24 3/8 x 55 7/8 600 x 1400 619 x 1419
EQ 0712 27 9/16 x 47 1/4 28 5/16 x 48 700 x 1200 719 x 1219
EQ 0714 27 9/16 x 55 1/8 28 5/16 x 55 7/8 700 x 1400 719 x 1419
EQ 0716 27 9/16 x 63 28 5/16 x 63 3/4 700 x 1600 719 x 1619
EQ 0814 31 1/2 x 55 1/8 32 1/4 x 55 7/8 800 x 1400 819 x 1419
EQ 0816 31 1/2 x 63 32 1/4 x 63 3/4 800 x 1600 819 x 1619
EQ 0818 31 1/2 x 70 7/8 32 1/4 x 71 5/8 800 x 1800 819 x 1819
EQ 0916 35 7/16 x 63 3/4 36 3/16 x 63 3/4 900 x 1600 919 x 1619
EQ 0918 35 7/16 x 70 7/8 36 3/16 x 71 5/8 900 x 1800 919 x 1819
EQ 1016 39 3/8 x 63 40 1/8 x 63 3/4 1000 x 1600 1019 x 1619
EQ 1018 39 3/8 x 70 7/8 40 1/8 x 71 5/8 1000 x 1800 1019 x 1819
EQ 1218 47 1/4 x 70 7/8 48 x 71 5/8 1200 x 1800 1219 x 1819
EQ 1418 55 1/8 x 70 7/8 55 7/8 x 71 5/8 1400 x 1800 1419 x 1819

Elliptical Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
EL 0800 31 1/2 X 9 13/16 32 1/4 X 10 9/16 800 X 250 819 X 269
EL 0900 35 7/16 X 9 13/16 36 3/16 X 10 9/16 900 X 250 919 X 269
EL 1000 39 3/8 X 9 13/16 40 1/8 X 10 9/16 1000 X 250 1019 X 269
EL 1200 47 1/4 X 11 13/16 48 X 12 9/16 1200 X 300 1219 X 319
EL 1400 55 1/8 X 11 13/16 55 7/8 X 12 9/16 1400 X 300 1419 X 319
EL 1600 63 X 13 3/4 63 3/4 X 14 1/2 1600 X 350 1619 X 369
EL 1800 70 7/8 X 13 3/4 71 5/8 X 14 1/2 1800 X 350 1819 X 369

Extended Elliptical Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
EE 0808 31 1/2 X 31 1/2 32 1/4 X 32 1/4 800 X 800 819 X 819
EE 0810 31 1/2 X 39 3/8 32 1/4 X 40 1/8 800 X 1000 819 X 1019
EE 0812 31 1/2 X 47 1/4 32 1/4 X 48 800 X 1200 819 X 1219
EE 1010 39 3/8 X 39 3/8 40 1/8 X 40 1/8 1000 X 1000 1019 X 1019
EE 1012 39 3/8 X 47 1/4 40 1/8 X 48 1000 X 1200 1019 X 1219
EE 1014 39 3/8 X 55 1/8 40 1/8 X 55 7/8 1000 X 1400 1019 X 1419
EE 1212 47 1/4 X 47 1/4 48 X 48 1200 X 1200 1219 X 1219
EE 1214 47 1/4 X 55 1/8 48 X 55 7/8 1200 X 1400 1219 X 1419
EE 1216 47 1/4 X 63 48 X 63 3/4 1200 X 1600 1219 X 1619
EE 1414 55 1/8 X 55 1/8 55 7/8 X 55 7/8 1400 X 1400 1419 X 1419
EE 1416 55 1/8 X 63 55 7/8 X 63 3/4 1400 X 1600 1419 X 1619
EE 1418 55 1/8 X 70 7/8 55 7/8 X 71 5/8 1400 X 1800 1419 X 1819
EE 1616 63 X 63 63 3/4 X 63 3/4 1600 X 1600 1619 X 1619
EE 1818 70 7/8 X 70 7/8 71 5/8 X 71 5/8 1800 X 1800 1819 X 1819

Half Chord Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
HC 0500 19 11/16 X 9 13/16 20 13/16 X 10 9/16 500 X 250 528 X 269
HC 0600 23 5/8 X 11 13/16 24 3/4 X 12 9/16 600 X 300 628 X 319
HC 0700 27 9/16 X 11 13/16 28 13/16 X 12 9/16 700 X 300 731 X 319
HC 0800 31 1/2 X 13 3/4 32 11/16 X 14 1/2 800 X 350 831 X 369
HC 0900 35 7/16 X 13 3/4 36 3/4 X 14 1/2 900 X 350 934 X 369
HC 1000 39 3/8 X 15 3/4 40 11/16 X 16 1/2 1000 X 400 1033 X 419
HC 1200 47 1/4 X 15 3/4 48 3/4 X 16 1/2 1200 X 400 1238 X 419
HC 1400 55 1/8 X 17 11/16 56 5/8 X 18 7/16 1400 X 450 1439 X 469

Extended Half Chord Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
EH 0512 19 11/16 X 39 3/8 20 7/16 X 40 1/8 500 X 1000 519 X 1019
EH 0510 19 11/16 X 47 1/4 20 7/16 X 48 500 X 1200 519 X 1219
EH 0612 23 5/8 X 47 1/4 24 3/8 X 48 600 X 1200 619 X 1219
EH 0614 23 5/8 X 55 1/8 24 3/8 X 55 7/8 600 X 1400 619 X 1419
EH 0712 27 9/16 X 47 1/4 28 5/16 X 48 700 X 1200 719 X 1219
EH 0714 27 9/16 X 55 1/8 28 5/16 X 55 7/8 700 X 1400 719 X 1419
EH 0716 27 9/16 X 63 28 5/16 X 63 3/4 700 X 1600 719 X 1619
EH 0814 31 1/2 X 55 1/8 32 1/4 X 55 7/8 800 X 1400 819 X 1419
EH 0816 31 1/2 X 63 32 1/4 X 63 3/4 800 X 1600 819 X 1619
EH 0818 31 1/2 X 70 7/8 32 1/4 X 71 5/8 800 X 1800 819 X 1819
EH 0916 35 7/16 X 63 36 3/16 X 63 3/4 900 X 1600 919 X 1619
EH 0918 35 7/16 X 70 7/8 36 3/16 X 71 5/8 900 X 1800 919 X 1819
EH 1016 39 3/8 X 63 40 1/8 X 63 3/4 1000 X 1600 1019 X 1619
EH 1018 39 3/8 X 70 7/8 40 1/8 X 71 5/8 1000 X 1800 1019 X 1819
EH 1218 47 1/4 X 70 7/8 48 X 71 5/8 1200 X 1800 1219 X 1819
EH 1418 55 1/8 X 70 7/8 55 7/8 X 71 5/8 1400 X 1800 1419 X 1819

Full Chord Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
FC 0800 31 1/2 X 9 13/16 32 11/16 X 10 9/16 800 X 250 830 X 269
FC 0900 31 1/2 X 9 13/16 36 3/4 X 10 9/16 900 X 250 934 X 269
FC 1000 39 3/8 X 9 13/16 40 13/16 X 10 9/16 1000 X 250 1037 X 269
FC 1200 47 1/4 X 11 13/16 48 11/16 X 12 9/16 1200 X 300 1237 X 319
FC 1400 55 1/8 X 11 13/16 56 13/16 X 12 9/16 1400 X 300 1444 X 319
FC 1600 63 X 13 3/4 64 11/16 X 14 1/2 1600 X 350 1643 X 369
FC 1800 70 7/8 X 13 3/4 72 3/4 X 14 1/2 1800 X 350 1848 X 369

Extended Full Chord Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
EF 0808 31 1/2 X 31 1/2 32 1/4 X 32 1/4 800 X 800 819 X 819
EF 0810 31 1/2 X 39 3/8 32 1/4 X 40 1/8 800 X 1000 819 X 1019
EF 0812 31 1/2 X 47 1/4 32 1/4 X 48 800 X 1200 819 X 1219
EF 1010 39 3/8 X 39 3/8 40 1/8 X 40 1/8 1000 X 1000 1019 X 1019
EF 1012 39 3/8 X 47 1/4 40 1/8 X 48 1000 X 1200 1019 X 1219
EF 1014 39 3/8 X 55 1/8 40 1/8 X 55 7/8 1000 X 1400 1019 X 1419
EF 1212 47 1/4 X 47 1/4 48 X 48 1200 X 1200 1219 X 1219
EF 1214 47 1/4 X 55 1/8 48 X 55 7/8 1200 X 1400 1219 X 1419
EF 1216 47 1/4 X 63 48 X 63 3/4 1200 X 1600 1219 X 1619
EF 1414 55 1/8 X 55 1/8 55 7/8 X 55 7/8 1400 X 1400 1419 X 1419
EF 1416 55 1/8 X 63 55 7/8 X 63 3/4 1400 X 1600 1419 X 1619
EF 1418 55 1/8 X 70 7/8 55 7/8 X 71 5/8 1400 X 1800 1419 X 1819
EF 1616 63 X 63 63 3/4 X 63 3/4 1600 X 1600 1619 X 1619
EF 1618 70 7/8 X 70 7/8 71 5/8 X 71 5/8 1600 X 1800 1619 X 1819
EF 1818 70 7/8 X 70 7/8 71 5/8 X 71 5/8 1800 X 1800 1819 X 1819

Full Round Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
FR 0606 23 5/8 X 23 5/8 24 3/8 X 24 3/8 600 X 600 619 X 619
FR 0808 31 1/2 X 31 1/2 32 1/4 X 32 1/4 800 X 800 819 X 819
FR 0909 35 7/16 X 35 7/16 36 3/16 X 36 3/16 900 X 900 919 X 919
FR 1010 39 3/8 X 39 3/8 40 1/8 X 40 1/8 1000 X 1000 1019 X 1019
FR 1212 47 1/4 X 47 1/4 48 X 48 1200 X 1200 1219 X 1219
FR 1414 55 1/8 X 55 1/8 55 7/8 X 55 7/8 1400 X 1400 1419 X 1419
FR 1616 63 X 63 63 3/4 X 63 3/4 1600 X 1600 1619 X 1619
FR 1818 70 7/8 X 70 7/8 71 5/8 X 71 5/8 1800 X 1800 1819 X 1819

Octagon Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
OW 0606 23 5/8 X 23 5/8 24 3/8 X 24 3/8 600 X 600 619 X 619
OW 0808 31 1/2 X 31 1/2 32 1/4 X 32 1/4 800 X 800 819 X 819
OW 1010 39 3/8 X 39 3/8 40 1/8 X 40 1/8 1000 X 1000 1019 X 1019

Oval Windows

Unit Sizes
Model Number Unit O.S.M. (Imperial) Rough Opening (Imperial) Unit O.S.M. (Metric) Rough Opening (Metric)
OV 7512 29 1/2 X 47 1/4 30 1/4 X 48 750 X 1200 769 X 1219
OV 0914 35 7/16 X 55 1/8 36 3/16 X 55 7/8 900 X 1400 919 X 1419
OV 1275 47 1/4 X 29 1/2 48 X 30 1/4 1200 X 750 1219 X 769
OV 1409 55 1/8 X 35 7/16 55 7/8 X 36 3/16 1400 X 900 1419 X 919