Prehung Double Doors: Exterior Entry Systems Ready to Install
Prehung double doors are the most impactful front entry upgrade available for a US home. Each unit ships with two door slabs factory-mounted inside a shared frame, fully weatherstripped and aligned for immediate installation. Whether you are replacing an aging entry or specifying prehung double doors exterior for new construction, browse our collection below or use this guide to choose the right configuration for your opening.
What Are Prehung Double Doors?
Double prehung entry doors are a factory-assembled system combining two door slabs, a shared jamb, hinges, astragal, weatherstripping, and threshold into one complete ready-to-install unit. Unlike sourcing and assembling individual components on-site, prehung double doors arrive factory-aligned, which is essential for a double door configuration where consistent gap tolerance between both slabs requires precision that field assembly cannot reliably deliver. Prehung exterior double doors eliminate the most common installation failures: uneven reveals, binding slabs, and center-seam weatherseal gaps that develop when double door systems are assembled around an existing frame.
Active Door and Passive Door Explained
Every set of prehung double doors contains two functionally distinct panels. The active door is the primary panel used for daily entry and exit, equipped with a lockset and operated freely on its hinges. The passive door is held in position by flush bolts that engage the frame at the top and bottom, remaining closed during normal use. Both panels open only when full double-width clearance is needed for moving furniture or appliances. Understanding this distinction matters when measuring interior clearance and selecting hardware for prehung double doors exterior installations.
The Astragal: Why It Matters for Prehung Double Doors
The astragal is a vertical molding strip mounted on the edge of the passive door. When the active door closes, it compresses against the astragal, creating a weathertight seal across the center gap between both panels. For prehung exterior double doors, the astragal performs two essential functions: it blocks wind, rain, and air infiltration through the center seam, and it covers that seam to prevent tampering with the latch mechanism. Not all prehung double doors include an astragal as standard equipment; verify that the selected unit includes one before purchasing, as its absence meaningfully compromises the weathersealing performance of any exterior double door system.
Why Prehung Is Essential for Double Doors
Double door systems require a significantly higher level of alignment precision than single door units. Both slabs must hang plumb and level inside a shared frame while maintaining uniform reveal gaps on all four sides and consistent alignment along the center meeting stile. Factory-assembled units achieve this alignment under controlled manufacturing conditions, eliminating the misalignment, binding, and long-term weatherseal failure that field-assembled double door systems regularly produce when hinges and frames are not precisely coordinated from the outset.
Inswing vs Outswing Prehung Double Doors
The swing direction of double doors exterior units affects weathersealing performance, security configuration, interior space requirements, and compliance with local building codes. Both inswing and outswing prehung double doors are available in our collection. The right direction depends on the climate of the installation location and the functional priorities of the entry.
Inswing Prehung Double Doors
Inswing double entry doors are the most common front entry configuration in US residential construction. Both slabs swing inward, protecting hinge hardware from direct weather exposure and simplifying weatherstripping at the head and jamb. This configuration requires adequate interior floor clearance for both panels to open fully, which should be confirmed against the furniture layout of the adjacent foyer. In most continental US climates, inswing units with quality weatherstripping and an adjustable sill deliver reliable long-term performance with low maintenance overhead.
Outswing Prehung Exterior Double Doors
Prehung exterior outswing double doors open outward, pressing both slabs against the exterior frame stops when closed. This compression delivers a tighter seal against wind-driven rain than inswing configurations and is the preferred specification in high-wind and hurricane-zone markets including Florida, the Gulf Coast, the Carolinas, and coastal New England. Local building codes in many of these regions require outswing or impact-rated entry doors, making prehung exterior outswing double doors the default specification for coastal residential construction rather than an optional upgrade.
Prehung exterior outswing double doors also free up interior floor space, which benefits narrow foyers and tight entry areas. The key specification consideration is hinge security: outswing configurations expose hinges to the exterior, requiring security hinges with non-removable pins to prevent forced entry at the hinge side. Every outswing configuration in our prehung double doors collection is specified with appropriate hinge hardware for residential security requirements.
Prehung Double Doors Materials: Fiberglass, Steel, or Wood?
Material selection for prehung double doors determines long-term weathersealing stability, dimensional retention, maintenance requirements, and visual character. The larger combined surface area of these units makes material selection especially consequential: dimensional instability in one slab affects the alignment of both panels over time.
Fiberglass Prehung Double Doors
Fiberglass is the most widely specified material for prehung double doors across the US residential market. Two large fiberglass slabs maintain dimensional stability across temperature and humidity cycles that cause wood panels to expand and contract unevenly, creating binding and center-seam gaps over time. Double doors in fiberglass resist warping, denting, rust, and rot in coastal, humid, and freeze-thaw environments, covering the widest range of US climates without climate-specific maintenance. Polyurethane foam cores deliver R-values of 5 to 6, and most configurations carry Energy Star certification.
High-density fiberglass replicates wood-grain texture convincingly, making them equally suited to craftsman, colonial, and contemporary residential styles. Our ProVia Signet fiberglass doors include prehung double doors configurations in warranted wood-grain finishes engineered for the US residential market.
Steel Prehung Double Doors
Steel prehung double doors deliver the strongest upfront security at the most accessible price of any material. Twenty-gauge steel construction with a polyurethane insulating core provides reliable forced-entry resistance and consistent thermal performance across most continental US climates. Steel double door units exterior suit modern and contemporary architectural styles effectively in solid panel and geometric glass configurations. The key maintenance consideration is surface protection in coastal or high-humidity environments, which requires periodic repainting to prevent surface rust.
Browse our exterior steel doors collection for available prehung double doors configurations in inswing and outswing across a range of panel styles.
Wood Double Prehung Front Doors
Wood prehung double front doors deliver material authenticity that fiberglass and steel cannot fully replicate. Mahogany is the most specified species for prehung exterior double doors in wood, offering natural rot resistance and dimensional stability superior to most other hardwoods. Wood double prehung units suit luxury homes, craftsman residences, and period-accurate projects where the character of natural material is architecturally essential. The trade-off is maintenance: wood in direct-exposure locations requires repainting or re-staining every two to five years and benefits significantly from a covered entryway that limits direct sun and standing water.
Rough Opening Requirements for Prehung Double Doors
Rough opening calculation for prehung double doors is more involved than for single doors because the combined slab width, frame thickness, astragal, and shimming clearance must all fit within one framed opening. Ordering without confirming the rough opening against the unit's installation sheet is the most common and costliest procurement error in double door projects.
How to Calculate the Rough Opening
The rough opening width for prehung double doors equals the combined nominal width of both slabs plus approximately 2 inches for frame, shims, and clearance. Two 36-inch slabs produce a 72-inch nominal width, requiring a rough opening of approximately 74 inches wide. The height rough opening follows the same rule as single prehung units: add 2 to 2.5 inches to the nominal door height. Always verify the exact rough opening against the manufacturer's installation documentation for the selected model, as astragal thickness and jamb construction specifications vary between products.
Standard Prehung Double Door Sizes and Rough Openings
Common double prehung exterior doors sizes and their approximate rough opening requirements are:
- 60 x 80 in. (2 x 30-in. slabs): rough opening approximately 62 x 82.5 in.
- 64 x 80 in. (2 x 32-in. slabs): rough opening approximately 66 x 82.5 in.
- 72 x 80 in. (2 x 36-in. slabs): rough opening approximately 74 x 82.5 in.
- 72 x 96 in. (2 x 36-in. slabs, 8-ft. height): rough opening approximately 74 x 98.5 in.
These are planning estimates based on standard framing allowances. Confirm against the specific product's installation sheet before framing the wall or placing your order.
Prehung Double Doors Styles and Configurations
Double door entry systems are available in configurations ranging from symmetrical solid-panel entries to full-glass contemporary systems across all three primary materials. Style selection shapes the visual character of the entry and determines how natural light enters the foyer.
Solid Panel Prehung Double Doors
Solid panel configurations prioritize privacy, thermal performance, and a clean symmetrical facade. Traditional 6-panel, raised-panel, and shaker configurations suit craftsman, colonial, and transitional architectural styles. Fiberglass solid panel configurations in painted or wood-grain stained finishes deliver the classic grand entry aesthetic with significantly lower maintenance requirements than equivalent wood units.
Glass Panel Prehung Double Doors
Glass panel configurations incorporate decorative lites ranging from small accent panels to full-length glass spanning most of the door height. Partial glass configurations bring natural light into the foyer while retaining a solid panel for privacy. Full-lite glass options maximize light transfer and suit covered entries where direct weather exposure is limited. Frosted and decorative glass options balance light transmission with appropriate privacy for residential front entries.
Modern Prehung Double Doors
Modern prehung double doors feature clean horizontal lines, flush profiles, and architectural glass that define the contemporary entry aesthetic. Our Nova Inox steel and aluminum systems are available in multiple panel configurations with glass, mirror, or accent inserts, engineered to European manufacturing standards that ensure dimensional precision across the full double door width. Browse the modern front doors collection for available double configurations in three profile colors.
Why Buy Prehung Double Doors from Doors and Beyond?
Doors and Beyond carries a curated selection of prehung double doors from ProVia, Nova, and other trusted manufacturers, covering standard US residential sizes and custom configurations with expert technical support. Every unit in our collection ships fully factory-assembled with the frame, hinges, weatherstripping, astragal, and threshold pre-installed and ready for installation. Key reasons homeowners and contractors choose us:
- ProVia Signet and Ascent fiberglass prehung double doors: industry-leading insulation performance and warranted wood-grain finishes for the US residential market.
- Nova steel and aluminum double door systems: European precision manufacturing with ten panel designs in three profile colors.
- Complete pre-assembled units: frame, hinges, weatherstripping, astragal, and sill factory-installed.
- Expert guidance and showrooms: Milltown, NJ and Hallandale Beach, FL, or call 888-221-7848.
Bulk pricing is available for contractor and builder accounts managing multi-unit residential or commercial projects.
Frequently Asked Questions
What is the rough opening for 72-inch prehung double doors?
A 72-inch set of prehung double doors requires a rough opening of approximately 74 inches wide by 82.5 inches tall. Add 2 inches to the total combined slab width and 2 to 2.5 inches to the nominal height.
Do both doors in prehung double doors open and close?
One panel is the active door used for daily entry. The other is the passive door, held by flush bolts and only opened when full double-width clearance is needed for moving large items.
What is an astragal and do prehung double doors need one?
An astragal is a vertical strip on the passive door that seals the center gap when the active door closes. Essential for prehung exterior double doors, it blocks air and water infiltration and prevents tampering at the center seam.
What is the difference between inswing and outswing prehung double doors?
Inswing configurations open inward and are standard for most US residential entries. Outswing prehung double doors open outward, compressing tighter against the frame and are required in hurricane zones and coastal markets where building codes mandate outswing doors.
Are prehung exterior double doors Energy Star rated?
Yes. Most fiberglass and insulated steel units in our collection carry Energy Star certification. Polyurethane foam cores deliver R-values of 5 to 6, reducing heating and cooling losses through the door assembly year-round.
What jamb depth do prehung double doors require?
The two most common depths are 4-9/16 inches for 2x4 wall framing and 6-9/16 inches for 2x6 framing. Measure from your interior drywall face to the exterior sheathing face to confirm the correct depth for your specific opening.
Prehung double doors bring grand entry presence and factory-engineered alignment precision that field-assembled systems cannot consistently match. Doors and Beyond offers a complete range of prehung double doors in fiberglass, steel, and wood across inswing, outswing, glass, and modern configurations. Browse the full collection above, visit our NJ or FL showroom, or call 888-221-7848 today.
