FCM - Fixed Skylight

Curb Mounted

Fixed curb mount skylight
VELUX energy performance skylights

Skylight sizes for FCM skylights

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


Flashing systems for FCM skylights

Description Roofing material Roof pitch Product code
Step flashing w/
adhesive underlayment
Asphalt shingles,
wood shakes and flat tile
10°-60° ECL 0000C
High profile flashing w/
adhesive underlayment
Tile 14°-60° ECW 0000C


Installing a skylight is easier with the Instant Light Shaft

The Instant Light Shaft is faster, cleaner, more efficient and cost-effective than traditional drywall installation. It can be installed in an hour versus 20 hours over 3 days - it's that easy!

• Works on all "box" type, 90° light shafts (no flare).

• 16" standard depth (trim to actual on site).

• All other pieces are pre-cut to size to be site assembled.

• 4" minimum spacing required around all sides if multiple skylights are installed