Alpine 173 Sliding Patio Door – 106-3/4" x 80" | Nail-On & Retrofit

Upgrade your home's indoor-outdoor connection with the Alpine 173 XOO Sliding Patio Door — a premium, energy-efficient door engineered for Southern California's climate and built to last for decades. Available in two installation options — Nail-On (NFS 1-3/8") and Retrofit (Flush Fin) — this door fits seamlessly into new construction and replacement projects alike.

Whether you're opening up a living room to a backyard in Irvine, replacing an aging door in Huntington Beach, or building new in Newport Coast, the Alpine 173 delivers the performance, security, and curb appeal your home deserves.

Product Specifications

• Model: Alpine 173 (A173)
• Operation: XOO / OOX (3-panel sliding configuration)
• Call Size: 106-3/4" W x 80" H
• Frame Size: 106-1/4" x 79-1/2"
• Frame Color: White
• Glass Package: SolarTherm Ultra Plus – Double Glaze, Tempered (3/16" / 3/16")
• STC Rating: 31 (sound reduction)
• U-Factor: 0.28
• SHGC: 0.23
• Visible Transmittance (VT): 0.53
• Condensation Resistance (CR): 59
• CPD: ASO-A-98-09046-00001
• ENERGY STAR 7.0 Certified: All climate zones

Why Choose the Alpine 173 Sliding Patio Door?

Not all sliding patio doors are created equal. The Alpine 173 is engineered with commercial-grade components that outperform standard builder-grade alternatives. Here's what sets it apart:

• Fusion-welded frame construction — stronger corners, better air and water resistance
• Super Spacer® foam spacer system — reduces thermal bridging and energy loss at the glass edge
• Precision tandem roller system on stainless steel track — smooth, effortless operation year after year
• Metal-reinforced sash and vertical components — added structural strength for large panel sizes
• Extra-deep weatherstripped interlocks — superior protection against air infiltration at meeting stiles
• European-style handle with thumb lock — intuitive, one-hand operation
• Dual-point mortise lock — independently adjustable for a secure, tight seal
• Heavy-duty fiberglass screen with aluminum frame — four-corner adjustable wheel system included
• HD screen ships with the door — no waiting, no separate order

Buying Guide: Nail-On vs. Retrofit — Which Do You Need?

Choosing the right frame extrusion is critical for a proper fit and weathertight installation. Here's a quick guide:

Nail-On (NFS 1-3/8") — $1,646.52

Best for new construction or full frame replacement where the existing frame is being removed. The integral nailing fin attaches directly to the rough opening framing, providing a solid, weatherproof connection. Choose this if you're starting from scratch or doing a full window/door replacement.

Retrofit (Flush Fin) — $1,782.15

Best for replacement projects where the existing frame remains in place. The flush fin overlaps the existing frame for a clean, finished look without major demolition. Ideal for homeowners who want to upgrade their door without a full remodel.

Not sure which option is right for your project? Call us at 714-499-9930 or visit our showroom — our team will help you measure and select the correct configuration.

ENERGY STAR 7.0 — Built for California's Climate

As of October 2023, ENERGY STAR 7.0 introduced stricter U-Factor and Solar Heat Gain Coefficient (SHGC) requirements for windows and doors. The Alpine 173 meets ENERGY STAR 7.0 certification in all climate zones, including Southern California's hot, sunny conditions.

With a U-Factor of 0.28 and SHGC of 0.23, this door minimizes heat gain in summer and heat loss in winter — helping reduce your energy bills year-round. The SolarTherm Ultra Plus glass package uses Low-E (low-emissivity) coating to block infrared heat while maintaining excellent natural light transmission (VT: 0.53).

Learn more about ENERGY STAR 7.0 and Alpine's SolarTherm glass packages →

Frequently Asked Questions

What size rough opening do I need for the Alpine 173?

The call size is 106-3/4" W x 80" H. Your rough opening should typically be 1/2" larger on each side. We recommend consulting a licensed installer for exact measurements before ordering.

Does this door come with a screen?

Yes. A heavy-duty fiberglass HD screen with an aluminum frame ships with the door at no additional charge.

Is the Alpine 173 available in other colors or finishes?

This listing is for the white frame with no exterior finish. Contact us for availability of other color options or custom configurations.

What is the lead time for this door?

All Alpine sliding patio doors are made to order. Please allow approximately 14 business days for production. You will be notified when your order is ready for pickup or shipment.

Can I see this door in person before buying?

Absolutely. Visit our showroom at MM Home Improvement Center, 16142 Harbor Blvd, Fountain Valley, CA 92708. Our team is available to walk you through options, discuss installation requirements, and help you choose the right door for your home.

Visit Our Orange County Showroom

We're more than an online store — we're your local home improvement partner in Orange County. Come see our sliding patio doors, windows, and more in person at:

MM Home Improvement Center
16142 Harbor Blvd, Fountain Valley, CA 92708
📞 714-499-9930

Proudly serving homeowners and contractors in Fountain Valley, Irvine, Huntington Beach, Costa Mesa, Newport Beach, Santa Ana, Anaheim, Garden Grove, and all of Orange County.

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Ready to order? Add to cart above or call 714-499-9930 to speak with our team. We're here to make your home improvement project a success.