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New VELUX Flexi-Loc tunnel connection system cuts installation time in half Designed specifically to be installed with VELUX TGR 010, TSR 010 and TMR 010 models Installation on non-VELUX tubular skylights is not recommended Maximum recommended tunnel length is 20 ft.
The VELUX ZTR 010 0004 is a highly reflective 4foot rigid tunnel extension. It is designed to be installed with 10inch VELUX sun tunnel tubular skylights. To provide excellent light transmission and brighter, whiter light output, rigid tunnels have a reflective inner surface.