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18 Lite Round Top Single Front Door - steel and glass front door closed view - Alpada Doors
18 Lite Round Top Single Front Door - steel and glass front door open view - Alpada Doors

18 Lite - Round Top | Single Front Door

Sale price$3,696.00

Delivery truck icon At your door before 26 August 2026.

Info icon 2-3 people needed to accept shipment.

Size
Size guide: Arched doors

Size Guide - Arched doors

Available Sizes

Door Type Min Width Max Width Min Height Max Height
Single Door 24" 54" 78" 106"
Double Door 48" 108" 78" 106"

Any size within this range can be pre-ordered. Doors come pre-hung in a steel frame — listed sizes include the frame.

How to Measure

  • Width: Measure the opening at the top, middle, and bottom. Use the smallest of the three measurements.
  • Alignment: Use a level to make sure the sides are straight and plumb.
  • Height: Measure at the center of the arch — or the highest point of the opening if it’s square.

Note: For rough openings, we recommend adding 0.5" to both the width and height to allow for finishing and easy installation.

Specifications

Steel
Galvanized steel frame with foam insulation
Glass
Double-pane insulated (5+6A+5mm) argon-filled, tempered
Frame
1.57" (40mm) thermally insulated
Door
Pre-hung with frame, ready to install
Finish
Durable powder coating, any RAL color available
Weight
Single 110–150lbs / Double 220–300lbs
Included
Frame, handle, glass, hardware, bolts, installation manual
Add-ons
Transoms & Sidelites available on request — contact for info
Shipping
Custom orders 12–16 weeks. LTL freight, continental US
Warranty
1-year warranty on structure, glass, paint & finish

The finest grid in the round top singles. A 5x3 grid in the body, three panes in the arch. The Classic Grid steel pattern dominates the visual and gives the door a conservatory or greenhouse quality. Formal, detailed, and unmistakable from the street.

18 Lite Round Top Single Front Door - steel and glass front door closed view - Alpada Doors
18 Lite - Round Top | Single Front Door Sale price$3,696.00

Frequently Asked Questions

Our doors feature a carbon steel frame with tempered glass panels, ensuring durability and style. The steel is finished with a matte black powder coating for a sleek, modern look.

  • Steel Thickness: 1.26 inches (32 mm)
  • Glass Thickness: 0.20 inches (5 mm)
  • Frame Width/Thickness: 1.57 inches (40 mm)
  • Weight (Without Packaging): 85–100 lbs, depending on size and style

Tempered glass is heat-treated to be stronger and safer than regular glass. It's designed to shatter into small, less harmful pieces in case of breakage.

Carbon steel is a durable, high-strength material that's resistant to wear and corrosion, making it ideal for long-lasting doors.

  • Clear Glass: Maximizes light and openness for modern spaces.
  • Frosted Glass: Enhances privacy with a soft, diffused glow.
  • Gray Glass: Offers a sleek, tinted look for added elegance.
  • Ribbed Horizontal Glass: Provides texture and privacy with a linear design.
  • Ribbed Vertical Glass: Adds dimension with striking vertical patterns.

Note: Glass type does not affect the price.

  • Interior Doors: Matte Black (RAL 7021), Grey Blue (RAL 5008), Sepia Brown (RAL 8014), Olive Gray (RAL 7002), Pebble Gray (RAL 7032), Window Gray (RAL 7040), Pure White (RAL 9010).
  • Exterior Doors: Any color from the RAL palette.

Our doors come pre-hung in a steel frame. Add a 0.5-inch gap to both the width and height for proper adjustments during installation. For example, a 36" x 96" door requires a rough opening of 36.5" x 96.5".

Tools Needed: Tape measure, level, and a notebook.

Steps:

  • Measure the width at the top, middle, and bottom, and record the smallest measurement.
  • Measure the height on the left and right sides, and record the smallest measurement.
  • Use a level to check alignment and note any adjustments needed.

Our pre-hung doors come with a tailored Installation Manual. For professional help, let us know when placing your order. Installation services may be available depending on your location.

  • Custom Orders: 12–16 weeks. Expedited lead time is not available.
  • In-Stock Orders: Shipped within 1–3 business days.

Orders are packed in secure wooden cases to prevent damage. We deliver within the continental U.S., with shipping costs calculated during checkout. For Alaska and Hawaii, custom delivery estimates are provided.

A door jamb is optional. You can install the door in an existing jamb or add one. For guidance, refer to our Measurement Guide.

We offer handles with or without locks at no extra cost. For custom lock installations, contact us with details to confirm compatibility.

We provide a 1-year warranty covering specific defects. Exceptions include improper handling, installation, and normal wear and tear. Read more in our Warranty Policy.

  • Clean surfaces with a soft cloth and mild soap solution.
  • Avoid abrasive materials and harsh chemicals.
  • Use non-abrasive glass cleaners for glass panels.
  • Lubricate hinges and locks regularly, and check seals for wear.
  • Custom orders are non-refundable.
  • Standard orders can be returned within 30 days. Delivery fees are non-refundable, and restocking fees may apply for damages.

Refer to our Return Policy for details.

Alpada Doors BBB Business Review