HomeSkylight Models 21” Office Drop Ceiling Tubular Skylight

21" Drop Ceiling Tubular Skylight - Flat or Curb Mount
Light Output
  • Illuminates up to 700 sq. ft.
  • Equivalent of up to 1,450 watts
Performance Features:
  • 25 Year Product Warranty
  • Hurricane Tested/Approved
  • ICC-ES Listed
Flashings Available:
  • Standard Flat Roof
  • Curb Mount
Flashing Colors:
  • Unpainted Aluminum
Diffuser Styles:
  • 24″ x 24″ Prismatic
Accessories Available:
  • Electric Light Kit
  • Dimmer Kit
  • Additional Light Pipe
  • Angle Adapter (Elbow)
Common Application:
  • Commercial Offices
  • Retail Stores
  • Schools
  • Hospitals
  • Spas and Salons
  • Cafeterias
  • Industrial Kitchens
  • Community Centers
21″ Kit Includes:
  • High-Impact Acrylic Dome
  • Flat or Curb Mount Flashing
  • 4 Feet of Light Pipe
  • Transition Box
  • Grid System Light Fixture
  • All Hardware Needed

21″ Drop Ceiling Skylight – Curb Mount

21″ Flat Roof Flashing

The prismatic diffuser is made of durable acrylic. The diffusers surface contains several small prisms to help spread the light evenly.

21″ Drop Ceiling Tubular Skylight Info Sheet
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1a: Acrylic Dome
Modified acrylic construction provides unsurpassed weatherability and superior impact strength. Able to withstand large temperature swings, leakproof, prevents condensation and blocks out harmful UV rays.

1b: Aluminum Curb Mount Flashing
Constructed of commercial pure grade 1100 series aluminum. Square shaped flashing easily installs over curb. Curb box should be constructed on-site using 2¨ x 10¨ lumber and carefully sealed with roofing material.

1c: Highly Reflective Light Pipe
Miro-Silver surface specially designed for 98% reflectivity of pure white light even in early morning and late afternoon. Light pipe is NOT a laminated polymer sheet – can’t delaminate, yellow, crack or peel.

1d: Transition Box
Constructed of rugged aluminum powder-coated white. Easily fits all standard drop ceiling grid systems and is available with 2 choices of diffusers styles: Prismatic or SkyBrite.

2a: Flat Roof Flashing
Constructed of commercial pure grade 1100 series aluminum without seams. Unique round shape allows for easy installation on flat roofs without disturbing much of the roofing material.


Check out images from actual work we've done with residential skylights

For about the cost of a nice light fixture, Natural Light Tubular Skylights will transform any dark space by filling it with soft, evenly dispersed natural light. The heavy-duty unit installs easily, operates for free and needs no maintenance.

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