VELUX ZTC 022 0041US Sun Tunnel Energy Kit w/Thermal Plate & Diffusing Disc for 22" TMR/TMF/TGR/TCR Sun Tunnels



The VELUX ZTC 022 0041US is an energy kit, which includes a 22" thermal plate and a diffusing disc. This model is designed to increase the energy efficiency of the VELUX low profile domed sun tunnels.


  • Increases the energy efficiency of the VELUX low profile domed SUN TUNNELS
  • Ensures TMR/TMF/TGR/TCR022 are ENERGY STAR® qualified


  • Size: 22"


VELUX provides a wide-range of warranties for their line of sun tunnels. Depending on the product purchased, the following warranties may apply:

  • 20 Year VELUX Sun Tunnel Skylight Rigid Tunnel Limited Warranty
  • 10 Year VELUX Skylights and Sun Tunnel Skylights Limited Warranty
  • 5 Year VELUX Polycarbonate Clarity Limited Warranty
  • 5 Year VELUX Acrylic and Polycarbonate Skylights Limited Warranty (for Metro-lite and Dura-lite)

These warranties only apply if the product is finished, installed, operated and maintained strictly in accordance with VELUX instructions or other instructions furnished with the Covered Product. Improve Depot recommends a professional installation by a CERTIFIED INSTALLER to ensure that the product is protected by these warranties.

Normal wear and tear is not covered by VELUX's warranties, nor are problems arising from failure to properly maintain the product. Other restrictions apply, so be sure to read the included warranty information packaged with the product.

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