Modern interior transom windows can bring daylight into hallways, rooms, and doorways while adding an architectural detail without taking up wall space. The five fixed vinyl options below offer different widths and design details: the 12-by-72-inch model suits longer openings, while the smaller sizes can fit more compact spaces. Grid designs are available in two sizes for buyers who want a traditional accent; the other listed options have a simpler appearance. Compare the dimensions and confirm installation requirements before choosing.
| Product | Best suited for | Notable listed detail |
|---|---|---|
| 12″ x 48″ White Vinyl | Medium-width openings | Double-pane, Low-E, and argon gas |
| 12″ x 72″ White Vinyl | Longer openings | Double-pane tempered glass |
| 10″ x 36″ White Vinyl | Compact openings with grids | Internal grid design |
| 10″ x 29″ White Vinyl | Shorter openings with grids | Internal grid design |
| 10″ x 48″ White Vinyl | Openings 48 inches wide | Product details are limited |
12″ x 48″ White Vinyl Transom Window

This fixed window is best for buyers who need a 48-inch-wide transom and want listed glazing features beyond basic double-pane construction. Its description specifies Low-E glass and argon gas, along with double-pane insulation. It is non-operable, so it is intended to add light and visual interest rather than provide ventilation.
The white vinyl frame is described as low maintenance and resistant to warping, peeling, and corrosion. This option was selected for its clearly stated glass features and practical middle width. Choose it if those details fit the project; avoid it if the opening requires an operable window. Confirm the product’s exact rough-opening and installation requirements before ordering.
12″ x 72″ White Vinyl Transom Window

This 72-inch-wide option is best for a long opening above a doorway, hallway, or decorative wall space. The listing describes a fixed, non-operable design with double-pane tempered glass intended to reduce heat transfer and improve insulation. Its white vinyl frame is described as durable and low maintenance.
It was selected for buyers who need a wider transom than the 48-inch models provide. The main limitation is its size: it may not suit shorter openings, and its fixed design does not provide airflow. Measure the opening carefully and check the installation specifications instead of relying on the nominal product dimensions alone.
10″ x 36″ White Grid Transom Window

This model is best for a compact opening where internal grids are part of the desired look. The listing describes double-pane tempered glass, a white vinyl frame, and internal grids that provide a classic architectural detail. It is presented as suitable for modern or traditional home styles, making it a choice for buyers seeking a less plain appearance.
Its 36-inch width is shorter than the 48- and 72-inch options, so it may be easier to match to a smaller opening. It was selected for its combination of stated insulation features and grid design. A limitation is that the grids add visual divisions; choose a plain-glass style if an uninterrupted view is the priority.
10″ x 29″ White Grid Transom Window

This is the shortest listed option and is best for buyers fitting a small opening who want internal grids. Its product description lists double-pane tempered glass, a low-maintenance white vinyl frame, and a classic grid detail. The 29-inch width distinguishes it from the 36-inch grid model for projects where available wall space is limited.
It was selected as a compact alternative within the grid-style options. The limitation is that its shorter width will not cover a wider opening without a different design solution. Confirm the required frame and rough-opening dimensions before selecting it, and note that the listing describes a fixed window rather than a ventilating one.
10″ x 48″ White Vinyl Transom Window

This 48-inch-wide model is best for shoppers whose opening calls for the listed dimensions and who want to investigate another white vinyl transom option. The supplied product name identifies it as a household fixed window. However, the available product information does not specify glass type, grid design, or other construction details.
It was selected because its stated width adds another size choice to the comparison. Its key limitation is the lack of supplied feature details, so do not assume it shares the glazing or grid features of the other products. Review the full listing and installation specifications before deciding whether it meets the project requirements.
Buying Guide: How to Choose a Modern Interior Transom Window
What size should you choose?
Start by measuring the intended opening and comparing it with the listed product dimensions. The options here range from 10 inches wide by 29 inches to 12 inches wide by 72 inches. Product dimensions may not equal the rough opening needed for installation, so check the manufacturer’s specifications and consult an installer when necessary.
Do you need a fixed or operable window?
All five options are described as fixed or household fixed windows, and the detailed listings specify that the windows do not open. Choose a fixed transom when the goal is to bring in light or create a visual connection between spaces. If ventilation is essential, look for an operable product instead.
Should you choose grids or plain glass?
The 10-by-29 and 10-by-36 models list internal grids, which provide a more traditional architectural detail. The 12-by-48 and 12-by-72 descriptions do not list grids. Consider the surrounding doors, trim, and interior style, and verify the exact appearance in the product listing before purchase.
Which glazing details matter?
Double-pane glass is specified for several products, and some listings also identify tempered glass. The 12-by-48 option additionally lists Low-E glass and argon gas. Compare only the features confirmed for each model; the supplied details for the 10-by-48 product do not identify its glazing construction.
Frequently Asked Questions
Do these transom windows open?
No. The detailed listings describe the products as fixed and non-operable, so they do not provide ventilation.
Which option is widest?
The 12-by-72-inch white vinyl model is the widest listed option.
Which models have internal grids?
The 10-by-29-inch and 10-by-36-inch models list internal grids.
Which product lists Low-E glass and argon gas?
The 12-by-48-inch white vinyl model lists double-pane insulation, Low-E glass, and argon gas.
Can these products be used indoors?
The listings describe them for household use and identify applications such as doorways and hallways. Confirm installation suitability and specifications for the exact interior project before purchasing.