Best Glass Inserts for Doors: Top Replacements for More Light and Style
The following guide highlights top glass insert options that fit standard entry doors, combine safety with style, and offer easy installation. Read on to compare sizes, frame styles, and energy features to choose the best fit for your door project.
| Product | Brand | Size Fit | Type | Key Benefit |
|---|---|---|---|---|
| ODL Entry Door Glass Replacement Kit (24″ x 38″) | ODL | 24″ x 38″; 1-3/4″ thick doors | Insulated glass with low-e double pane | Energy efficient and easy replacement |
| 22 x 36 Entry Door Clear Glass Insert (9 Lite) | Generic | 36″ width; 6’8″–7’0″ height | Tempered glass with maintenance-free frame | Quick upgrade with light transmission |
| 22 x 36 Entry Door Clear Glass Insert (1 Lite) | Generic | 36″ width; 6’8″–7’0″ height | Tempered glass; maintenance-free frame | Sleek single-lite option |
| PetSafe Sliding Glass Pet Door | PetSafe | Adjustable height 75 7/8″ to 81″ | Sliding pet door insert | No-cut installation for rentals |
| Lakenyon 22″ x 64″ Entry Door Glass Inserts (1-Lite) | Lakenyon | 22″ x 64″; 1-3/4″ thick doors | White framed glass insert | Energy-efficient window grid insert |
Note: Sizes are approximate and intended for common exterior door configurations. Always verify door thickness and frame compatibility before purchasing.
ODL Entry Door Glass Replacement for 24×38 Doors
The ODL glass kit is designed to replace a 24″ x 38″ door glass panel with a frame that accommodates 1-3/4″ thick doors. It includes an insulated glass panel, a door glass frame set, and mounting screws with caps, making it suitable for steel or fiberglass doors that match the specified panel configuration. Typical installation time is under an hour with common tools; two people are recommended for handling.
Key features include energy-efficient low-E double-pane glass and a white outer frame with a 9-grid pattern in some configurations. The kit targets longevity and cost-effective door enhancement by reusing the existing door framework rather than replacing the entire door.
22 x 36 Entry Door Clear Glass Insert (9 Lite)
This kit accommodates 36″ door widths and 6’8″ to 7’0″ heights, fitting doors that are 1.75″ thick. It includes tempered safety glass, a maintenance-free exterior frame, installation screws, and screw hole plugs. A pre-applied dry glaze exterior seal helps keep the unit sealed during assembly. For best results, use two installers. Additional installation guidance is provided by the supplier.
The 9-lite design maximizes natural light while preserving privacy and security compared with full glass panes. This option is well-suited for homeowners seeking a classic, multi-panel look without replacing the entire door.
22 x 36 Entry Door Clear Glass Insert (1 Lite)
Designed for steel or fiberglass doors with a width of 36″ and height options of 6’8″ or 7’0″, this kit uses a single pane of tempered safety glass with a maintenance-free frame. It includes necessary installation screws and plugs, a dry glaze exterior seal, and is intended for quick replacement of existing door inserts. Two-person installation is often recommended to ensure proper alignment and sealing.
As a simpler alternative to multi-lite configurations, the single-lite design offers clean lines and modern aesthetics while preserving daylight and security features in a durable frame system.
PetSafe Sliding Glass Pet Door
This no-cut installation solution slides into an existing sliding glass door track, ideal for renters and apartments with no permanent alterations. The unit features a magnetic flap, shatter-resistant glass, a human door lock kit, and a closing panel to maintain energy efficiency. The flap opening is 10 1/4″ wide by 16 3/8″ high, designed to accommodate dogs up to 100 lb. The product emphasizes ease of use and secure, weatherproof operation.
Because it relies on the existing door track, this option minimizes structural changes while providing flexible, pet-friendly access and removing the need for tools that would alter the doorway permanently.
Lakenyon 22 x 64 Entry Door Glass Inserts (1-Lite)
The 1-lite glass insert by Lakenyon is sized at 22″ x 64″ with a white frame and a door thickness compatibility of 1-3/4″. It is marketed as a classic, energy-efficient upgrade designed to replace existing door windows while enhancing natural light and curb appeal. The installation is described as straightforward for both DIY and professional setups, often taking about 15 minutes depending on your door configuration.
The unit’s energy-efficient design reduces heat transfer and contributes to improved indoor comfort. The white frame can be painted to match or accent your door, offering versatility in style and finish options.
Buying Guide
Key purchase considerations when selecting a glass door insert include size compatibility, door material, and thickness. Verify that your door frame supports the insert’s outer dimensions and that the door itself is within the recommended thickness (commonly 1-3/4″ for most inserts). Tempered or laminated safety glass is essential for durability and safety, particularly for exterior doors with high foot traffic or pet access.
Energy features vary among inserts. Low-E coatings and double-pane designs help reduce heat transfer, improving year-round comfort and potential energy savings. If your door has a grid or mullion pattern (like a 9-lite or 1-lite design), ensure the insert’s exterior frame aligns with your preferred aesthetic. For rentals or multi-tenant settings, consider no-cut alternatives that install within an existing track or frame without permanent modifications.
Installation effort should be weighed alongside cost. Some kits claim under-an-hour installation with basic tools, while others may require two people or professional assistance to ensure proper sealing and alignment. Pre-applied glazes or dry glazing on the exterior frame can simplify assembly, but always follow the manufacturer’s instructions for sealants and compatibility with adhesives if you add extra sealant.
Maintenance considerations include the type of glass (tempered vs. laminated), exterior frame material (paintable white frame versus factory-coated), and the ease of cleaning the glass panels. Durability, warranty terms, and replacement part availability are also important factors to evaluate before purchasing.