TCR Commercial Sun Tunnel™ Skylight

• Curb mounted flashing for flat roofs; inner dimension of flashing is 31" x 31"
• 36" rigid top elbow with a 30° offset
• Highly reflective 60" telescopic tunnel
• Flexible bottom elbow; 24" fully extended (doubles as expansion joint)
• 9" Round-to-square adapter
• Prismatic diffuser
• 8 foot run standard (based on vertical drop)
• Fast adjustment of tunnel length thanks to telescopic design
• No vertical seam assembly required
• Compatible with hard ceiling applications
• Can be installed between 0° to 30° of pitches
• Modular system - can be purchased in three separate components

• 98% highly specular reflective rigid tunnel
• Excellent distribution of light by the prismatic diffuser at ceiling level

• Unique telescopic design of rigid tunnel (no vertical seam assembly required)
• Upper elbow designed to be adjusted from the roof
• Flexible bottom elbow allows for easy installation even at sharp offsets (flex elbow bends and does not significantly reduce aperture when offset)
• Hard ceiling installations possible with versatile round-to-square adapter box

• On large projects, VELUX offers assistance to architects with renderings and lighting simulations.
• Lighting software produces photometric analysis of commercial space
  
• 3-D renderings of commercial space
  

TCR 022 P1 Roofing components: Dome Flashing Top elbow Hardware and tape
TCR 022 P3 Tunnel components: Telescopic tunnel (5') Hardware and tape
TCR 022 P2 Ceiling components: Steel fastening ring (x2) Flex bottom elbow Round-to-square adapter box Diffuse assembly Hardware

The TCR SUN TUNNEL skylight is constructed as a modular system that allows you to purchase only the required components for your individual project.

Modular combinations	Run length	Components
	3 feet	P1 + P2
	4 - 5 feet	P1 + P2 + Coupler
	6 - 8 feet	P1 + P2 + P3 (Telescopic)
	9 feet	P1 + P2 + P3 + Coupler
	10 - 13 feet	P1 + P2 + (2)P3
	14 feet	P1 + P2 + (2)P3 + Coupler
	15 - 18 feet	P1 + P2 + (3)P3
	19 feet	P1 + P2 + (3)P3 + Coupler
	20 feet	P1 + P2 + (4)P3

Notes:

• Distance is from roofline to ceiling. 12" have already been subtracted for curb height and flashing overlap with collar.
• Run length calculated based on vertical drop.
• Run length accounts for standard 2" overlap between components.