• Free, natural ventilation.

  • Let rising warm air vent naturally.

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Venting Skylights

NFRC Rated - Certified AAMA Testing - LEED Credits

CrystaLite skylights are NAMI certified and NFRC rated for thermal performance; U-Factor, SHGC, Visible Light Transmittance. Standard skylights are NAMI certified to the NAFS Standard for air infiltration, water penetration and structural loading; commonly referred to as 'AAMA Testing.' Refer to our NFRC Quick Reference Guide for more rated values.

Refer to our LEED v2.2 / v3.0 Verification Document to see how CrystaLite skylights can help your LEED Project, including Recycled Content and Regional Materials.

Standard Frames

5830 Frame

PVC / Aluminum

Our most popular opening skylight frame features a PVC interior. A PVC leg drops down into the light well which provides a flat surface to attach the chain drive Truth opener and aligns flush with interior drywall. The chain passes through a slot in the inner frame which allows the bug screen to cover the entire daylight without interruption. Option for hand crank (Truth angle drive) vs. 6'-10' pole (Truth straight drive) should be determined at time of order. Screen is standard. Designed for standard 1-1/2" thick curbing only. High Load glazing available.


NFRC Rated Values
T / T 0.48 0.25 0.57 366
T / T 0.48 0.17 0.34 340
T / L 0.49 0.25 0.56 366
T / L 0.49 0.17 0.33 340
Domes U SHGC VT Color
Double 0.67 0.66 0.77 Clear
Double 0.67 0.46 0.43 White
Triple 0.50 0.60 0.66 Clear
Triple 0.50 0.42 0.34 White

VT values for domes are not certified due to NFRC Test Procedure limitations.

  • NFRC Quick Reference PDF
  • Product Data Sheet PDF
  • CSI Specification DOC
  • Venting Skylight Order Form PDF
PDF/DWG Details
Glass IGU Domes

3921 Frame

Aluminum Thermal Break

The 3921 frame does not include an interior frame portion and does not require interior drywall to be cut back from the top of the curb. However, not having such prohibits a means for the operator chain to pass through, thus requiring wickets in the screen.


NFRC Rated Values
T / T 0.60 0.28 0.65 366
T / L 0.60 0.28 0.63 366
Domes U SHGC VT Color
Double 0.78 0.75 0.77 Clear
Double 0.78 0.52 0.43 White
Triple 0.61 0.68 0.66 Clear
Triple 0.61 0.48 0.34 White

VT values for domes are not certified due to NFRC Test Procedure limitations.

  • Product Data Sheet PDF
  • CSI Specification DOC
  • Venting Skylight Order Form PDF
PDF/DWG Details
Glass IGU Domes

Truth Manual Operator

Operated by a pole, or if in reach, a hand crank. Hand crank requires an angle drive unit which differs than the standard straight drive used with the pole. The pole can operate with an angle drive in some installations. Please indicate at time of order. Available in bronze and white.

5830 Venting Skylight with

Solar Smart Installed

Solar Smart Operator

Designed to be used without any additional power and wiring from the building.

The intelligence of Solar Smart extends to the handheld remote; bidirectional feedback display is the most noteworthy to the end user. The large and readable display provides feedback on a number of critical items including; Open / Close status displayed in percentage, operator and remote battery levels, solar charge rate, temperature automatic functions, and several other advanced programming options. A single remote can be paired with one or multiple operators within range.

solar smart window operator


Lifting Capacity
60 lbs at the chain which provides operation to hinged systems weighing up to 120 lbs.
Closing Force
The operator will close until 30-35 lbs of force is reached, sufficient to compress weather seals.
Pull-Out Resistance
Tested by independent certified laboratory to resist a pull-out force of 750 lbs while maintaining ability to operate after force was removed.
Opening Distance
Maximum travel of the chain is 8 inches. Factory default setting is 80% of total travel but this is easily changed by the end-user at any time.
Finish Materials
The structural base and mounting bracket are white painted aluminum. The decorative cover is white plastic. All external surfaces are paint-able.
Battery Pack
A Lithium 7.2 V rechargeable battery pack, capacity 1800 mAh. End-user replaceable with an expected life of up to 10 years under normal use and conditions.


Large, easy to read LCD shows function and status information for both the operator and remote control via bi-directional communication. Temperature displayed when not operating the system. Opening and closing status displayed by percentage during operation.
Operator and Remote battery levels displayed by percentage. Solar or AC adapter charge rate displayed in Milliamperes (mA).
FCC approved RF bi-directional communication.
Standard AA alkaline batteries, with an expected life of 1 year under normal use.
Stand up base integrated into design and a wall mount bracket is included.
Thermostat Automation
Integrated sensor for automated thermostat operation, end-user programmable.
Standard Features
Operates up to 9 units per Zone in up to 9 separate Zones, for a total capacity of 81 units.
Multiple remotes can be used.
Pairing and programming information is wirelessly synced between remotes to eliminate redundant programming.

Solar Panel

Amorphous silicon. Approx 13 x 3 inch.
Power output is a nominal 0.8 Watts at a maximum of 10 VDC. Typical current output when connected to the operator is 0 to 120mA depending on weather and battery conditions.
Expected 25% degradation in the first 1-2 years, then remains unchanged throughout the panel life of more than 20 years. This degradation is typical of solar panel assemblies. Solar Smart has been designed with this solar panel degradation in mind.
Mounting Hardware
Brackets and fasteners are stainless steel, ideal for outdoor corrosion resistance.

Designed and built to be a 'weather-proof lid' over a properly flashed curb.

Model sizes are based on Outside Curb Dimensions (OCD) with clearance on all 4 sides of the curb to allow for expansion & contraction. A snug but flexible fit, like a 'lid on a shoebox.'

Model Sizes

Model OCD Call-Out
1838 17.5" x 37.5"
1850 17.5" x 49.5"
1874 17.5" x 73.5"
2626 25.5" x 25.5" 2x2
2634 25.5" x 33.5"
2638 25.5" x 37.5" 2x3
2650 25.5" x 49.5" 2x4
2662 25.5" x 61.5"
2674 25.5" x 73.5" 2x6
2698 25.5" x 97.5"
3434 33.5" x 33.5"
Model Size OCD Call-Out
3438 33.5" x 37.5"
3450 33.5" x 49.5"
3474 33.5" x 73.5"
3838 37.5" x 37.5"
3850 37.5" x 49.5"
3862 37.5" x 61.5"
3874 37.5" x 73.5"
3898 37.5" x 97.5"
5050 49.5" x 49.5" 4x4
5062 49.5" x 61.5"
5074 49.5" x 73.5"

Note: ES Skylight and Venting Skylights are NOT available in 3474, 3874, 3898, 5062, and 5074 model sizes.

Glazing Options

Dome Glazing

Glass glazed skylights require at least a 2/12 pitched roof for installation. For flat and low pitched roofs, dome glazing is available in our standard frames (except 5843) and are available in single, double, and triple layers to meet your energy design needs.

UV Stablized, Impact-Modified Acrylic is standard. Co-polyester and polycarbonate is available. Standard colors include clear, white, and bronze.

Skylight Photos

See Full Skylight Photo Gallery

Standard Curb Mount

Standard Curb Mount - Opening Skylights

Standard Curb Mount - Domes

See Full Skylight Photo Gallery

Skylight Documents & Resources

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