FCM - Fixed Curb Mounted

VELUX Fixed Curb Mounted Commercial Skylights

  • Maintenance free frame
  • Can be installed in any direction
  • White laminated glass available where diffused lighting is required
  • Factory installed blinds available
commercial fcm

Custom-sized skylights

skylight sizes curb mounted diagram

We require maximum skylight clearance dimension in 1/4" increments (0, 1/4, 1/2, 3/4) for width and height

Skylight sizes for FCM

FCM Size Code
1430
1446
2222
2230
2234
2246
2270
3030
3046
3434
3446
4646
Inside curb (W"xH") 1412 x
3012
1412 x
4612
2212 x
2212
2212 x
3012
2212 x
3412
2212 x
4612
2212 x
7012
3012 x
3012
3012 x
4612
3412 x
3412
3412 x
4612
4612 x
4612
Outside curb (W"xH") 1712 x
3312
1712 x
4912
2512 x
2512
2512 x
3312
2512 x
3712
2512 x
4912
2512 x
7312
3312 x
3312
3312 x
4912
3712 x
3712
3712 x
4912
4912 x
4912
Maximum skylight clearance (W"xH") 1858 x
3458
1858 x
5058
2658 x
2658
2658 x
3458
2658 x
3858
2658 x
5058
2658 x
7358
3458 x
3458
3458 x
5058
3858 x
3858
3858 x
5058
5058 x
5058