30" x 46" BA-FNP Triple-Glazed Non-Opening Wooden Roof Window
The 30" x 46" BA-FNP Triple-Glazed Non-Opening Wooden Roof Window delivers abundant natural light and a clear connection to the outdoors through a permanently fixed, energy-efficient roof window. Because the sash is fixed in the frame by screws, the design allows larger glazing units than opening windows and can be installed very low above floor level.
Its triple-glazed, krypton-filled P5 safety glazing provides excellent thermal insulation, while the vacuum-impregnated, acrylic-lacquered pine frame ensures lasting durability across a wide range of roof pitches.
Maximum Fixed Daylight: A permanently fixed sash allows larger glazing units than opening windows, maximizing natural light.
Triple-Glazed Efficiency: Krypton-filled triple glazing delivers a low window U-value of 0.18 and glazing U-value of 0.09 for excellent thermal insulation.
P5 Safety Glazing: Laminated P5 anti-burglary glazing with a toughened outer pane improves safety and security.
Flexible Placement: Because the sash is fixed, the window can be installed very low above the floor and suits roof pitches from 15 to 90 degrees.
Durable Pine Frame: A vacuum-impregnated, acrylic-lacquered pine frame resists moisture for long service.
Need assistance specifying the BA-FNP? Our team can help review technical requirements, compare product options, and identify the right solution for your project's performance goals. Ask our product experts today!
Note: Standard glazing rated for installation up to 3,000 feet above sea level
Application: Fixed daylighting in sloped roofs
What Comes Standard and What Can Be Configured?
Every BA-FNP ships with the following as standard:
Triple-glazed P5 laminated krypton-filled glazing
Permanently fixed sash (screw-fixed in frame)
Vacuum-impregnated acrylic-lacquered pine frame
The following are ordered separately or specified to match the installation:
Flashing kit matched to the roof covering
Interior blinds and accessories
Energy Efficiency and Certification
The krypton-filled triple glazing and insulated pine frame are designed for very low heat transfer and reduced energy use. For efficiency ratings and program eligibility, confirm the current ENERGY STAR listing for the specific size and glazing.
Need a different size, glazing, or configuration? Browse our full range of roof windows and flashing kits to find the right fit for your project.
What to Know About Roof Opening and Installation Requirements?
Required Roof Opening
The BA-FNP is mounted into a framed roof opening sized to the window per the manufacturer's data for your specified size. Because the sash is fixed, the window can be placed low above the floor. Confirm the opening, roof pitch, and roof covering before installation, and pair the window with a matching flashing kit.
Compatible Applications
This window is designed for fixed daylighting in sloped roofs. Typical uses include:
Large fixed daylight openings
Low-placement roof glazing near floor level
Quiet interiors needing acoustic glazing
Residential and commercial daylighting
Installation Notes
Pair with the correct flashing kit for the roof covering.
Confirm the roof pitch falls between 15 and 90 degrees.
The fixed sash allows low placement above the floor.
Standard glazing is rated for installation up to 3,000 feet above sea level.
The BA-FNP is typically specified by architects, builders, and homeowners who want maximum fixed daylight with strong thermal and acoustic performance.
Common applications include:
Residential daylighting - large fixed glazing
Commercial interiors - quiet, efficient light
Low-placement roof windows near floor level
Acoustically sensitive spaces
Sloped-roof daylighting
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Frequently Asked Questions About Fixed Wooden Roof Windows
Why choose a non-opening roof window?
A fixed sash allows larger glazing units than opening windows for more daylight, and it can be installed very low above the floor since it does not need clearance to open.
What glazing does it use?
It uses triple-glazed P5 laminated, krypton-filled glazing with a toughened outer pane for excellent thermal insulation, 33 dB acoustic performance, and added safety.
What roof pitch does it suit?
It is suitable for roof pitches from 15 to 90 degrees and requires a flashing kit.
Do I need a flashing kit?
Yes. A flashing kit matched to your roof covering is ordered separately to weatherproof the installation.
Why buy roof windows from Best Access Doors instead of a general marketplace?
Best Access Doors specializes exclusively in access solutions, so you get direct access to product specialists who can confirm sizing, glazing, and the right flashing for your roof.
Get Maximum Daylight for Your Project
Call us at +1-888-327-5471 to discuss product options, request a quote, or explore custom configurations. Our experts are here to help you select the best solution for your project.
Product Downloads
Spec Sheet
BA-FNP
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Real Reviews From Real Customers
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