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FEATURES

  • The ideal choice for flat roof installations.
  • Strength and durability of acrylic or polycarbonate double or triple glazing.
  • Available in clear, white, and tinted acrylic or polycarbonate.
  • Columbia’s superior rigid extra wide four sided gutter Columbia Condensation Control System – designed to wick away moisture, protecting the lightwell from damage and staining.
  • White vinyl base frame matches the interior lightwell.
  • Durable, weather resistant, extruded aluminum exterior frame with baked enamel paint finish.
  • Seven standard frame colours (including black), unlimited custom options.
  • Comes standard with a Crank Handle for skylights within reach. Telescopic Pole for harder to reach applications, 4 – 6 ft and 6 – 10 ft lengths available. Hex ball adapter included.
  • Custom sizes available up to 4’ x 4’.
  • Pre installed removable insect screen with a white aluminum frame to match vinyl base and lightwell. Spring loaded pins allow for easy removal & installation.
  • Manufactured in Canada with 100% North American sourced raw materials.

Custom Sizes

Custom Sizes Feature

Available in standard & custom sizes. Acrylic & polycarbonate from 14 ½” x 14 ½” to 94 ½” x 94 ½”

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Recommended Roof
Type

Sloped Flat Dome Feature

Sloped or Flat

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Roof Pitch 0:12
Minimum

Min Pitch 0 12

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Recommended
Location
  • Kitchens
  • Bathrooms
  • Stairwells
  • Foyers
  • Dining Room
  • Living Room

The benefits of AC OCM – Manual Venting
Acrylic Dome Skylight

Our acrylic manually operated venting skylight provides the ultimate in interior comfort – bringing the brightness and clarity of natural light, while cooling your home with a pleasant cross breeze.

Allowing for the expelling of hot air build up, airborne odours and pollutants, naturally improving your home’s interior environment without relying exclusively on costly air conditioning.
Ac ocm_benefits 1
Fresh Air Ventilation
  • Improve the health of your home’s interior environment with the clarity and brightness of natural light and fresh air ventilation. Breathe in, and feel the revitalizing power of fresh air.
  • Natural ventilation allows you to release toxic pollutants and odors, and moderate the temperature of your home by expelling hot air that has accumulated in your upper floor.

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The Benefit of Natural Light
  • Living in the north we all need more natural daylight in our homes, particularly during the winter months when days are shorter, there are fewer hours of sunlight, and the sun is at a lower angle than during the summer.
  • Natural light has been proven to increase happiness and productivity.
  • Increasing the amount of natural light in your home offsets the impact of Seasonal Affective Disorder, which affects many people in the winter when they do not receive enough sunlight.
  • Natural light has been shown to lower the risk of nearsightedness in children and young adults by helping the eye produce dopamine, which aids in healthy eye development.

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Economical and Adds Value
  • Columbia curb mounted skylights are manufactured in Canada using materials from across North America, making them less costly compared to foreign products.
  • Skylights add to the value of your home as it is highly desirable to bring natural light into your home.

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Manual Operation
  • Your venting skylight comes standard with a crank handle, ideal for skylights that are within easy reach.
  • You can choose to purchase a telescopic pole to operate your skylight if it just out of reach. Available in 4ft to 6ft and 6ft to 10ft lengths. Compatible with venting curb mount and self flashing models. Hex ball adapter included.

 

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The Proven Engineering of Columbia Venting Frame
  1. Aluminum Exterior Frame
    • Standard exterior aluminum frame with baked enamel brown finish.Black, Charcoal Grey, White or Sandalwood aluminum frame available on all models.
    • Mill finish, clear anodized or custom colour aluminum frame also available.
  2. Base Frame

    • Maintenance free, white PVC, thermally broken vinyl base frame.If installed on sloped roof, specify dimension at top of skylight.
    • Skylight can be build horizontal or vertical, specify when ordering. E.g. available 2852 or 5228.
    • NOTE: OCM & OCM E curb width cannot exceed 1.75”.
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Acrylic, a Better Solution for Many Applications
  • Acrylic dome skylights are lightweight, and easier to install. The dome shape adds structural strength over a flat surface.
  • Available in both acrylic and polycarbonate. Polycarbonate has exceptional impact resistance and is ideal for applications where added security is needed.
  • Can be produced in clear, white or bronze tint for reducing the sun’s glare and solar heat gain.

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Acrylic is the right choice for many applications

  • Columbia manufactures skylights in acrylic and polycarbonate.
  • These versatile glazing materials are able to be produced in double and triple glazing options.
  • Acrylic and polycarbonate come in three tints – clear, bronze, and translucent white.
Double Glazed Clear
Double Glazed Clear
  • Double glazing is the right choice for most Canadian applications.
  • Gives a high degree of insulation.
  • Clear acrylic gives bright natural light.
Double Glazed Bronze
Double Glazed Bronze
  • Double glazing is the right choice for most Canadian applications.
  • Gives a high degree of insulation.
  • Bronze acrylic delivers the maximum protection from extreme sunlight, reducing glare and solar heat gain.
Double Glazed White
Double Glazed White
  • Double glazing is the right choice for most Canadian applications.
  • Gives a high degree of insulation.
  • White acrylic reduces the impact of extreme sunlight, reducing glare and solar heat gain.
  • Provides privacy.
Triple Glazed Clear
Triple Glazed Clear
  • Triple glazing is the preferred choice for Canadian climate, and provides additional energy efficiency.
  • Provides a superior degree of insulation.
  • Clear acrylic gives bright natural light.
  • Additional comfort in your interior space.
Triple Glazed Bronze
Triple Glazed Bronze
  • Triple glazing is the preferred choice for Canadian climate, and provides additional energy efficiency.
  • Provides a superior degree of insulation.
  • Bronze acrylic delivers protection from extreme sunlight, reducing glare and solar heat gain.
  • Additional comfort in your interior space.
Triple Glazed White
Triple Glazed White
  • Triple glazing is the preferred choice for Canadian climate, and provides additional energy efficiency.
  • Provides a superior degree of insulation.
  • White acrylic reduces the impact of extreme sunlight, reducing glare and solar heat gain.
  • Provides privacy.
  • Additional comfort in your interior space.
Min Pitch 0 12

Sizes of AC OCM – Manual Venting Acrylic Dome Skylight

Columbia’s AC OCM Manual Venting Acrylic Dome Skylight is available in the sizes shown in the chart below (Imperial and Metric). You can also review the most popular sizes. If you don’t see the size you need below, then please visit our Custom Sizes section. A printable PDF of the chart is available for download. It is important to note, all sizes are Inside Curb dimensions.

GO TO CUSTOM SIZES

If you can’t find the size you want in our standard sizes, go to our Custom size page.

Standard skylight measurement are available in both options.

Popular Sizes

The yellow star indicates the most popular sizes.


Min Pitch 0 12
Size Chart – Summary
Ac Ocm Size Chart Summary Metric En
Ac Ocm Size Chart Summary Imperial En

Pinch to enlarge.

NOTE: Sizes are reversible (must be specified at time of ordering). I.e. 3676 can be 7636.

Technical Information

Each model comes with a downloadable information package to help you select, specify, and install our product. If you do not find what you need, don’t hesitate to call our Columbia Customer Service Team at 604 437 3377 (Toll Free: 888 437 5557) or email info@columbiaskylights.com.

Download
Size Chart
Download Size Chart Cta
Download a PDF of the size chart for this model to keep as reference.

The size chart comes in Imperial and Metric.
Installation
Instructions
Columbia Installation Instructions Cta
Use Columbia’s installation instructions to ensure a successful installation.

Download the instructions for this model, or if you need multiple models go to the Installation Instruction Library page.
Drawings &
Specifications
Drawings And Specs Cta
Download two formats of this model’s technical drawings – (1) Detail or (2) Product Data. Also available, .dwg (CAD file) and Product Specifications as a Word Doc, PDF, or Text file.

For multiple models go to the Drawings & Specification Library page.

Accessories

FKCM – Curb Mount Flashing Kit
(Sloped asphalt or wood shake roof only)

IWS – Roofing Underlayment

Telescopic Pole
4ft – 6ft or 6ft – 10ft length
available

Crank Handle
(Replacement)

Why Columbia

Canadian made skylights, designed for our harsh climate

Columbia skylights are specifically designed for life in our Canadian climate. Whether subjected to snow, ice, wind, hail, or intense heat, our products are engineered to outperform these demanding conditions.

Many imported skylights are designed for a more temperate climate and lack the performance and durability. Columbia has spent many decades manufacturing premium quality skylights that have stood up to the test of time in our Canadian climate.

Every aspect of the skylight has been studied, engineered, and tested.

Columbia utilizes the best materials available, including the latest glass technology.

Energy efficiency is a concern for Canadian homeowners because of our extreme climate. Columbia is the only Canadian manufacturer to offer Triple Glazing on all our skylight models, fixed and venting. We offer more ENERGY STAR® glass options than any other manufacturer.

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New Mississauga distribution warehouse to better serve Ontario, Quebec & the Maritimes

We have relocated our eastern distribution warehouse to a newly constructed facility in Mississauga, Ontario. Columbia’s new distribution warehouse is larger and able to store a full range of ready to deliver Columbia, Slimlite, and FAKRO products.

The warehouse allows us to serve Eastern Canada with greater efficiency, and improved delivery times.