VELUX FCM Specifications & Test Results

Velux FCM Skylight Specification Intro

Models FCM
non-ventilating skylight
FCM1430
non-ventilating skylight
FCM1446
non-ventilating skylight
FCM2222
non-ventilating skylight
FCM2230
non-ventilating skylight
FCM2234
non-ventilating skylight
FCM2246

W x H W x H W x H W x H W x H W x H
Inside Curb (in) 14-1/2 x
30-1/2
14-1/2 x
46-1/2
22-1/2 x
22-1/2
22-1/2 x
30-1/2
22-1/2 x
34-1/2
22-1/2 x
46-1/2
Outside Curb (in) 17-1/2 x
33-1/2
17-1/2 x
49-1/2
25-1/2 x
25-1/2
25-1/2 x
33-1/2
25-1/2 x
37-1/2
25-1/2 x
49-1/2
Daylight Area (in) 14-1/2 x
30-1/2
14-1/2 x
46-1/2
22-1/2 x
22-1/2
22-1/2 x
30-1/2
22-1/2 x
34-1/2
22-1/2 x
46-1/2

Models FCM (continued)
non-ventilating skylight
FCM2270
non-ventilating skylight
FCM3030
non-ventilating skylight
FCM3046
non-ventilating skylight
FCM3434
non-ventilating skylight
FCM4646

W x H W x H W x H W x H W x H
Outside Frame (in) 22-1/2 x
70-1/2
30-1/2 x
30-1/2
30-1/2 x
46-1/2
34-1/2 x
34-1/2
46-1/2 x
46-1/2
Rough Opening (in) 25-1/2 x
73-1/2
33-1/2 x
33-1/2
33-1/2 x
49-1/2
37-1/2 x
37-1/2
49-1/2 x
49-1/2
Daylight Area (in) 22-1/2 x
70-1/2
30-1/2 x
30-1/2
30-1/2 x
46-1/2
34-1/2 x
34-1/2
46-1/2 x
46-1/2

AIR INFILTRATION
1.57 psf
75 Pa
0.01 cfm/ft2 0.05 l/s/m2
WATER RESISTANCE
2.86 psf
@ 5 US gal/ft2/h
140 Pa
@ 3.4 l/m2/min
No Entry No Entry
STRUCTURAL PERFORMANCE

DOWNWARD LOAD WIND UPLIFT
Laminated,
Heat-Strengthened
40-121 (psf) 45-110 (psf)
Laminated,
Tempered
40-121 (psf)
45-110 (psf)

THERMAL PERFORMANCE

(Complete unit values)
All thermal performance SHGC Vt values for VELUX® skylights are NFRC certified, labeled and listed in the NFRC product directory. (In accordance with NFRC procedures.)
GLASS
20° slope ratings shown
Tempered (2005)
Tempered,
Low-E2,
Argon
Gas-filled
Laminated (2004)
Laminated,
Low-E2,
Argon
Gas-filled
U-factor (R-Factor)
SHGC
Vt
0.48 (2.74)
0.33
0.56
0.47 (2.68)
0.34
0.55
FADING PROTECTION %
GLAZING CLASSICAL UV
PROTECTION %
TOTAL FADING
PROTECTION %
Tempered(2005)
Laminated(2004)
87%
99.9%
75%
83%

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46 Gettysburg Street, P.O. Box 310 Arendtsville, Pa 17303,
Phone: 1-800-237-7470


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