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Venting Manual

This model consists of a durable, weather resistant, extruded aluminum retaining frame and an extruded two piece fusion welded vinyl (PVC) sash and base frame.
The vinyl frames are thermally broken, preventing the passage of cold air from the exterior to the interior light shaft.

OVCM
ATCM-SPD
Vinyl Curb Mount (OVCM)

Operating mechanism
- The OVCM Vinyl Curb Mount skylight is easily opened and closed manually with standard crank handle.
- The handle may be replaced with adapter to use in conjunction with telescoping extension poles. Available in 4-6 and 6-10 lengths.
Removable insect screen
- Pre installed with white aluminum frame to match vinyl base and light shaft.
- Spring loaded pins allow for easy removal and installation.
Wide range of glazing options in both glass and acrylic
A. Glass
- Clear
- LoE Clear
- LoE Neat
- LoE Triple Glazed
- LoE Bronze
- Solar Reflective Bronze
- Heat Mirror 44
- Laminated option
All above standard tempered / tempered sealed units.
Each option available with interior pane in laminated clear or white.
Any other glass option, including grey, blue, green etc in plain or coated glass is available.
B. Acrylic
- Clear
- Bronze
- White
All above available in single, double, or triple glazed.
C. Polycarbonate
- Clear
- Bronze
- White
All above available in single, double, or triple glazed.
See Glazing section for additional information.
Suitable for all flat or sloped roof applications
- Glass Installs on roofs with minimum 2:12 slope (15 degrees)
- Acrylic Installs on flat or sloped roofs
- Polycarbonate Installs on flat or sloped roofs.
See Roof types and slopes section for additional information.
Standard sizes include a full range of models for homes designed with 16 and 24 on centre rafters or trusses.
See Why Skylights What Size section for additional information.
Any size skylight available
- Glass available in 22 standard sizes from 16x16 to 48x48
- Acrylic and polycarbonate available in 22 standard sizes from 16x16 to 48x48
- Any custom size in glass or acrylic also available. Example inside curb rough opening 17 x 37
Energy Star
The OVCM skylight depending on glass glazing option meet Energy Star requirements in different Canadian climactic zones.
See Energy Star section for additional information.
Exterior frame finishes four standard colours
- Standard frame colour Rideau Brown
- Optional frame colours Black, White, Sandalwood
- Custom coloured frames also available
Flashing system
- Flashing kits available for sloped applications only
- Suitable for shingles and other low profile roofing materials
- Use in conjunction with underlayment for superior seal
- Custom flashings are required for flat roofs and other roofing materials
Interior frame finish including drywall return
White vinyl base frame matches interior light shaft
Built in drywall return to provide easy and clean finishing
Large capacity four sided condensation channel
- Weep holes allow any condensation build up to drain to the outside roof
- Allows for multi directional installation of skylight. Direction must be specified when ordering.
- Eliminates water stains on your interior light shaft
Warranty
Comprehensive 20 year warranty on insulated glass, and 10 years on skylight parts.
See Warranty section for additional information.
Aluminum Thermally Broken Curb Mounted (ATCM) Operable Manual Spindle

The ATCM operable skylight is hinged directly to the curb and does not include a two part sash and base. The entire skylight lifts off the curb and is sealed to the curb with a high density foam gasket when closed. This skylight does not include a screen and is primarily used for venting commercial applications.
The Columbia aluminum thermally broken curb mounted skylight is designed to work on any height curb with a nominal 2 width.
Operating Mechanism
- The ATCM spindle skylight is easily opened and closed manually with included telescoping 4-6 pole. Longer poles are available.
- Crank handle is optional.
- Clear
- LoE Clear
- LoE Neat
- LoE Triple Glazed
- LoE Bronze
- Solar Reflective Bronze
- Heat Mirror 44
- Laminated option
All above standard tempered / tempered sealed units.
Each option available with interior pane in laminated clear or white.
Any other glass option, including grey, blue, green etc in plain or coated glass is available.
B. Acrylic
- Clear
- Bronze
- White
All above available in single, double, or triple glazed.
C. Polycarbonate
- Clear
- Bronze
- White
All above available in single, double, or triple glazed.
See Glazing section for additional information.
- Glass Installs on roofs with minimum 2:12 slope (15 degrees).
- Acrylic Installs on flat or sloped roofs.
- Polycarbonate Installs on flat or sloped roofs.
See Roof types and slopes section for additional information.
See Why Skylights What Size section for additional information.
- Glass available in 34 standard sizes from 16 x 16 to 48 x 48.
- Acrylic and polycarbonate available in 71 standard sizes from 16 x 16 to 96 x 96.
- Any custom size in glass or acrylic also available. Example inside curb rough opening 17 x 56 .
Warranty
Comprehensive 20 year warranty on insulated glass, and 10 years on the skylight
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