By the Gladiator Window & Doors Technical Team — factory-direct aluminum door and window systems shipped nationwide from Jacksonville, FL.

When a project timeline is tight, "lead time TBD" is not an answer. Gladiator Window & Doors keeps a curated inventory of standard large sliding glass doors ready to pull from stock and ship — no waiting on a production queue, no guessing on availability. This guide covers which sizes are on hand, how the delivery process works, what trade pricing looks like versus custom-order, which multi-slide configurations are available in stock, and the rough-opening and header checks every contractor should run before placing an order.

Which standard large sliding patio door sizes are available in stock and ready to ship?

Gladiator stocks the most-requested two-panel and three-panel aluminum sliding door widths in the 6-foot, 8-foot, 10-foot, and 12-foot nominal ranges — the sizes that cover the overwhelming majority of residential and light-commercial rough openings. All in-stock units ship as complete systems with thermal-break aluminum frames, 6mm tempered glass (standard), low-profile flush threshold, and factory-installed hardware. Common in-stock configurations include:

• 2-panel (OX / XO): 72" × 80", 96" × 80", 96" × 96"
• 3-panel (OXX / XXO): 108" × 80", 120" × 80", 144" × 80"
• 4-panel (OXXO): 144" × 80", 192" × 96"

Availability rotates based on order volume, so always confirm current stock status before committing a rough opening to a specific unit. Visit the doors ready to ship now page for a live listing of what is currently on the floor and ready to pull.

All in-stock sliding doors use Gladiator's thermal-break aluminum profile — a fully isolated frame that separates the interior and exterior aluminum to reduce conductive heat transfer. Glass is 6mm tempered as a baseline; dual-pane insulating units with low-e coatings are standard on in-stock inventory, supporting compliance with California Title 24 and other state energy codes.

How quickly can an in-stock aluminum sliding glass door be delivered nationwide?

In-stock Gladiator sliding doors ship significantly faster than any made-to-order unit — full stop. Because these doors are built, inspected, and warehoused at our Jacksonville factory before an order is even placed, they bypass the production queue entirely. Once an order is confirmed and payment is processed, in-stock units are typically crated and handed to the freight carrier within a few business days.

Nationwide freight transit times vary by destination — closer Southeast and Mid-Atlantic regions generally receive shipments sooner than the Pacific Northwest or Hawaii, but we ship to all 50 states with standard LTL freight. We never guarantee a specific delivery date because carrier transit is outside our direct control, but the factory-to-carrier handoff on in-stock orders is substantially faster than the 6–14 week lead times common with made-to-order aluminum systems.

For project scheduling purposes, build in time for:

• Order confirmation and payment processing (typically 1–2 business days)
• Factory crating and freight pickup (typically 2–5 business days for in-stock units)
• LTL transit to your job site or warehouse (varies by distance)
• Delivery inspection — always document any freight damage before signing the BOL

Contrast this with custom-order sliding doors, which enter the production queue after design approval and typically carry 6–12+ week lead times depending on panel count, glass spec, and finish. For schedule-sensitive projects, in-stock sliding glass doors are the clear path forward.

What is the price range for in-stock large sliding glass doors versus custom-order?

In-stock aluminum sliding doors from Gladiator are priced at a factory-direct trade rate — no dealer markup, no distributor layer, no showroom overhead. Because we manufacture and ship direct, the price you pay reflects actual production cost plus margin, not a retail stack.

The table below outlines how in-stock Gladiator sliding doors compare on price drivers versus two common alternative procurement paths — traditional dealer-network systems and imported thin-frame aluminum systems. Note: we do not publish or estimate competitor pricing; this table focuses on structural cost drivers and Gladiator's known specs.

Cost / Spec Factor	Gladiator In-Stock (Factory-Direct)	Dealer-Network Brands	Imported Thin-Frame Aluminum
Distribution model	Factory-direct, no middleman	Manufacturer → distributor → dealer → contractor	Importer → broker → reseller
Standard glass thickness	6mm tempered (baseline)	Typically 4–5mm; 6mm may be upcharge	Varies; often 4mm baseline
Thermal-break frame	Standard on all units	Standard on mid-to-upper lines	Inconsistent; verify by SKU
Lead time (in-stock units)	Days to freight handoff	Weeks; dealer may hold limited stock	Weeks to months from port of entry
Finish options (in-stock)	Matte black, white RAL 9010, dark grey RAL 7016, bronze anodized	Limited in-stock; custom finishes on order	Usually limited to black or white
Shipping cost	Free nationwide freight	Freight typically billed separately	Freight billed separately; import fees possible
Warranty	15-year manufacturer warranty	Varies by brand and product line	Varies; often shorter or limited
Trade / wholesale pricing	Reseller accounts available; apply online	Dealer program required; territory restrictions common	Volume minimums often required

For specific pricing on in-stock units, contact our trade desk at 904-822-1078 or apply for a wholesale account to access reseller pricing tiers. In-stock units carry the same factory-direct price advantage as made-to-order, with none of the wait.

Are multi-slide patio doors available in stock, or are they always custom?

Select multi-slide (multi-panel stacking) configurations are available in stock, though the in-stock range is narrower than two-panel units. Gladiator's aluminum sliding glass door line includes stocking SKUs in common 3- and 4-panel stacking configurations — specifically the widths that builders and developers reach for most often on large open-plan projects.

Here is how to think about the in-stock vs. custom split for multi-slide:

• In-stock multi-slide (3–4 panel): Standard panel widths of 36"–48" per leaf, standard height of 80" or 96", in matte black and white RAL 9010. These cover most residential great-room and master suite applications.
• Custom multi-slide (4–8+ panel): Any panel width, height, stacking direction, or finish outside the stock matrix goes to custom production — typically 6–12 weeks. This includes pocket configurations where all panels disappear fully into a wall cavity.
• Configuration notation: "OX" means one fixed panel, one operable. "OXXO" means both active panels stack center-out. Specify your stacking direction (stack LEFT or stack RIGHT) and the fixed-panel position before ordering.

If your opening is larger than what in-stock multi-slide covers, consider whether the rough opening can be framed to a stock size — often the most schedule-efficient path on new construction. Alternatively, explore Gladiator's bi-fold doors, which offer wide-span accordion configurations with their own in-stock SKUs for openings where full-open coverage matters more than a stacking slide.

What should contractors check before assuming an in-stock sliding door fits their rough opening?

An in-stock door is only a time-saver if it actually fits. These are the five checks every contractor or builder should run before committing a rough opening to a specific in-stock SKU:

1. Rough Opening Width and Height

Gladiator in-stock sliding doors are sized to fit standard rough openings with a typical 3/4" to 1" clearance on each side for shimming and leveling. Confirm your RO matches the published RO dimension — not the door's nominal width. A 96" (8-foot) nominal door does not drop into a 96"-wide rough opening.

2. Header and Structural Load Path

Large sliding doors — especially 3- and 4-panel units spanning 10–16 feet — require an engineered header or beam sized for the full span. Verify that the header design accounts for the full opening width plus bearing on each king stud. An undersized header will deflect and bind the door panels over time. Engage a structural engineer of record if this has not been confirmed during design.

3. Sill and Threshold Condition

Gladiator sliding doors use a low-profile flush threshold — designed to minimize trip hazard and allow a smooth indoor-to-outdoor transition. The sill must be level (within 1/8" across the full span), solid, and protected from standing water by proper flashing and waterproofing at the substrate. A crowned, sloped, or soft sill will prevent the threshold from sitting flat and will affect panel alignment.

4. Wall Thickness and Frame Depth

The Gladiator frame depth must match or be accommodated within your wall assembly. Standard 2×6 framing with exterior sheathing is the most common scenario; thicker wall assemblies (continuous insulation, SIP, ICF) may require extension jambs or specific rough-opening detailing. Confirm the frame depth spec against your wall section before ordering.

5. Stack Pocket or Panel-Stack Space

Multi-panel sliding doors require clear space beside the opening for stacked panels. A 3-panel OXX configuration with 48"-wide panels needs approximately 96" of wall space beside the opening on the stack side — plus framing clearance. Verify this space is free of outlets, switches, ducts, and structural members before the rough opening is framed.

For the most current size matrix and RO specs, review the product pages under our sliding glass door collection or call the trade desk for a project-specific consultation.

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Sell Gladiator doors at a wholesale price. Factory-direct aluminum sliding, bi-fold, and pivot doors — premium aluminum, 6mm glass, low-profile tracks, no upcharges, shipped nationwide. Contractors, builders, designers, and retailers get trade pricing and real support.

Apply for a Reseller & Wholesale Account · Call 904-822-1078