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21 x 54⁷⁄₁₆, FS C08, Fixed Deck Mount Skylight with Room Darkening Shade

VELUX
SKU:
FS C08 2004S
$696.00

Dimensions:  21 x 54 ⁷⁄₁₆ in.

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VELUX FS C08 Fixed Deck Mount Skylight

The VELUX FS C08 is a fixed, non-venting skylight designed to deliver abundant natural light into long, narrow spaces like hallways, bathrooms, or kitchens. With a rough opening of 21" x 54⅜", it offers an elegant vertical daylighting solution while maintaining a sleek, low-profile deck-mounted design.

Built for roofs with a pitch between 14° and 85°, the FS C08 blends clean aesthetics with VELUX’s industry-leading no-leak technology. This model is a great fit for homeowners who want light without ventilation, especially in areas where space or ceiling height is limited.

Key Features:

  • Laminated LowE3 Glass: Provides added safety, UV protection, and a 10-year hail breakage warranty.
  • Solar Room Darkening Shade: White double-pleated blackout cloth with honeycomb structure and aluminum coating enhances light control and insulation by up to 40%.
  • Deck Mount Installation: Secures directly to the roof deck for a low-profile finish on 14°–85° pitched roofs.
  • Energy Efficient: Integrated solar shade helps manage indoor temperatures year-round.
  • Certified Compliance: Meets Florida Product Approval FL13308 and Texas Department of Insurance TDI SK03.

Technical Specs:
Fixed, Non-Venting, Laminated LowE3 Glass, White Interior, Solar Shade, Roof Pitch: 14°–85°

Warranty:
10-year installation warranty when used with a VELUX flashing kit (sold separately).
10-year hail warranty on the glass.

FS C08 Sizing Chart C08
Outside frame (W"xH") 21 12 x 54 116
Rough opening/ Finished frame (W"xH") 21 x 54 716

 


Where Design Meets Lasting Performance

 

VELUX is more than a skylight manufacturer—it’s a symbol of functional design rooted in sustainability, innovation, and architectural integrity. With over 80 years of excellence, VELUX continues to lead the skylight industry with products that combine aesthetic simplicity and dependable performance. From moisture protection to thermal efficiency, every VELUX skylight is crafted to endure and enhance the homes they serve.

 

The VELUX FCM C08 Fixed Curb Mount Skylight is ideal for larger rooms and open living areas that benefit from broad, consistent daylight. Its sleek, fixed-glass design integrates smoothly with curb-mounted installations, allowing for effortless beauty and dependable protection without compromising your roofline.



Flashing


Roof Pitch


Curb Mount


A curb-mounted skylight is designed to sit on a raised curb structure built on the roof, making it a flexible option for both new installations and replacements. It’s especially well-suited for flat or low-slope roofs and simplifies installation when replacing older units or working with thicker roofing materials.

 

Compatible with roof pitches from 0:12 to 20:12 (0° to 60°), curb-mounted models are ideal for retrofits, homes with existing curbs, and roofing types like torch-down, TPO, modified bitumen, or tar & gravel.

 

Flashing options include ECL low-profile flashing for flat or low-slope roofs with membrane or rolled roofing; ECW step flashing for shingle or shake roofs with a minimum 3:12 pitch; and EMW flashing, custom-fit for standing seam and corrugated metal roofs.