Fixed Skylights

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(FS) Deck Mounted

FS Size Code	A06	C01	C04	C06	C08	C12	D26	D06	M02	M04	M06	M08	S01	S06
Outside Frame (W"xH")	15¼ x 46¼	21½ x 27⅜	21½ x 38⅜	21½ x 46¼	21½ x 54 1/16	21½ x 70¾	23¼ x 23 7/16	23¼ x 46¼	30 9/16 x 30½	30 9/16 x 38⅜	30 9/16 x 46¼	30 9/16 x 54 15/16	44¾ x 27⅜	44¾ x 46¼
Rough Opening / Finished Frame (W"xH")	14½ x 45¾	21 x 26⅞	21 x 37⅞	21 x 45¾	21 x 54 7/16	21 x 70¼	22½ x 22 15/16	22½ x 45¾	30 1/16 x 30	30 1/16 x 37⅞	30 1/16 x 45¾	30 1/16 x 54 7/16	44¼ x 26⅞	44¼ x 45¾

(FCM) – Curb Mounted

FCM Size Code	1430	1446	2222	2230	2234	2246	2270
Inside Curb WxH (in)	14½ x 30½	14½ x 46½	22½ x 22½	22½ x 30½	22½ x 34½	22½ x 46½	22½ x 70½
Outside Curb WxH (in)	17½ x 33½	17½ x 49½	25½ x 25½	25½ x 33½	25½ x 37½	25½ x 49½	25½ x 73½
Maximum Skylight Clearance WxH (in)	18⅝ x 34⅝	18⅝ x 50⅝	26⅝ x 26⅝	26⅝ x 34⅝	26⅝ x 38⅝	26⅝ x 50⅝	26⅝ x 73⅝

(FCM) – Curb Mounted (Continued)

FCM Size Code	3171	3030	3046	3422	3434	3446	4646	4672
Inside Curb WxH (in)	31½ x 71½	30½ x 30½	30½ x 46½	34½ x 22½	34½ x 34½	34½ x 46½	46½ x 46½	46½ x 72½
Outside Curb WxH (in)	34½ x 74½	33½ x 33½	33½ x 49½	37½ x 25½	37½ x 37½	37½ x 49½	49½ x 49½	49½ x 75½
Max. Clearance WxH (in)	35⅝ x 75⅝	34⅝ x 34⅝	34⅝ x 50⅝	38⅝ x 26⅝	38⅝ x 38⅝	38⅝ x 50⅝	50⅝ x 50⅝	50⅝ x 76⅝

All Non-Venting Skylights

VELUX’s non-venting models are a great way to fill your home with natural light while keeping interiors comfortable. Their clean, modern frames and energy-efficient LoE3 glass brighten rooms while cutting glare and blocking UV rays. This style is ideal for spaces that don’t need airflow—like hallways, stairwells, closets, or living areas that already have windows.

Designed for both deck- and curb-mount installation, these daylighting units give you flexible placement options and a secure, weather-tight seal for lasting protection.