Circular Units

Curb Mount Model DDCCM:

These double dome circular curb mount units have been updated to today’s specifications by incorporating our CS vinyl curb with a rolled aluminum retainer. These structural improvements reduce condensation and increase thermal performance by eliminating the need for weep holes.

Tested to compliance with AAMA\WDMA\CSA\101\I.S.2\A440 as required by the International Building Code.

Find a Sales Rep
  • Standard Sizes
  • Glazes and Finishes
  • Installation
  • Safety Considerations
Curb Mount (DDCCM) Outside Dimension of Curb
DDCCM–36 34”
DDCCM–48 46”
DDCCM–60 57”
DDCCM–72 70”
DDCCM–84 82”
DDCCM–96 94”

Custom sizes are not available.

Glazing Options


  • Clear
  • #2412 Bronze
  • #2447 White
  • Satin Sky


  • Clear
  • #2447 White

Finish Options

Frame finish is PVC, white interior and bronze exterior. Aluminum retainer frame.

Retainer Finish:

  • Mill (Standard)
  • Anodized, Kynar 500, Baked Enamel (more information)
  • Copper Clad


Curb Mount
Download PDF:  English  |  Español


Construction Video: Circular Curbs

Safety Considerations

Skylights pose an inherent risk of injury or death from fall throughs, and the safety of others is of the utmost importance to VELUX.  VELUX recommends that the customer, building owner or manager use additional protection with the skylight such as an exterior or interior safety cage, to enhance long-term safety.  The building owner or manager is responsible for providing fall protection around the skylight in accordance with OSHA regulations.  VELUX also recommends that the building owner or manager restrict roof access only to personnel who have been cautioned as to the location of the skylights, and warned not to sit, step or walk on the skylights.