Series D350XT Medium Stile Thermal Aluminum Storefront Door

Boyd's Series D350XT is a thermally broken medium stile commercial aluminum storefront entrance door engineered for strong thermal performance, energy efficiency, durable operation, and clean modern sightlines. The 3.5" medium stile profile provides a slimmer thermal entrance appearance for office, hospitality, retail, mixed-use, renovation, replacement, and modern commercial storefront applications.

The D350XT uses a 6/6 nylon thermal barrier to reduce heat transfer and improve energy performance. Its 2" door thickness is designed for 1" insulated glass units, with published U-values as low as 0.48 for a single door and 0.47 for a pair at 0.24 center-of-glass performance. Heavy-duty welded and mechanically fastened corner construction supports long-term durability while maintaining minimal exposed fasteners.

Series D350XT is available with Push/Pull, rim panic, concealed vertical rod panic, offset pivot, butt hinge, continuous hinge, mid-rail, 10" bottom-rail, special hardware, anodized finish, and painted finish options. The door is compatible with Boyd storefront systems and can be coordinated with B450XT center-set or B460XT front-set thermal storefront framing for a complete commercial entrance package.

Series D350XT Thermal Door Product Details

Series D350XT thermal construction, medium-stile dimensions, glazing, hardware, finish options, storefront compatibility, and published thermal performance:

Series D350XT Product Data and Downloads

Use the current Boyd resources below for D350XT detail drawings, product specifications, the thermal-door brochure, XT storefront coordination, finish options, and architectural project support.

When to Use the Series D350XT Thermal Door

• Commercial storefront entrances that require thermally broken aluminum door construction rather than a standard non-thermal entrance.

• Office, hospitality, retail, mixed-use, renovation, replacement, and modern storefront projects requiring a 3.5-inch medium stile and clean sightlines.

• Entrance openings requiring a 2-inch door thickness and 1-inch insulated glazing.

• Projects using U-values as low as 0.48 for a single door or 0.47 for a pair at 0.24 center-of-glass performance.

• Storefront entrance packages coordinated with B450XT center-set or B460XT front-set thermal storefront framing.

• Entrances requiring Push/Pull, rim panic, concealed vertical rod panic, offset pivot, butt hinge, continuous hinge, or compatible special hardware.

• Projects requiring mid-rail choices, 10-inch bottom-rail options, limited-water testing, anodized finishes, or painted finishes.

• Commercial openings that need heavy-duty welded and mechanically fastened corners with minimal exposed fasteners.

Choosing a Boyd Commercial Storefront Door

You are viewing the D350XT thermally broken medium stile entrance door. Door selection should begin with the required thermal strategy, stile width, storefront framing, entrance traffic, 1-inch insulated glazing, U-value target, hardware set, access control, panic hardware, bottom rail, mid rail, threshold, finish, and opening conditions. Review the related door and storefront systems below when the project requires a non-thermal entrance, a wider thermal door profile, or coordinated XT storefront framing.

Series D350XT Thermal Door Advantages

• Thermally broken commercial aluminum entrance construction helps reduce heat transfer and improve energy efficiency.

• A 3.5-inch medium stile profile provides slimmer, clean modern sightlines.

• Published U-values are as low as 0.48 for a single door and 0.47 for a pair at 0.24 center-of-glass performance.

• A 6/6 nylon thermal barrier separates the interior and exterior aluminum for enhanced energy performance.

• The 2-inch door thickness is designed for 1-inch insulated glass units.

• Heavy-duty welded and mechanically fastened corner construction supports strength, durability, and long-term entrance performance.

• Minimal exposed fasteners support a clean commercial storefront appearance.

• Limited-water testing supports commercial entrance review and threshold coordination.

• Push/Pull, rim panic, concealed vertical rod panic, offset pivot, butt hinge, continuous hinge, and special hardware options support varied entrance requirements.

• Mid-rail and 10-inch bottom-rail options support accessibility, hardware placement, durability, appearance, and owner standards.

• Anodized and painted finishes support coordination across the door leaf, entrance frame, surrounding storefront, hardware, and accessories.

• Compatible with Boyd storefront systems, including B450XT center-set and B460XT front-set thermal framing.

• Boyd representatives support thermal entrance selection, glazing, storefront framing, hardware, access control, finishes, drawings, specifications, order preparation, and installation planning.

Common Series D350XT Thermal Door Coordination Items

• Thermal entrance strategy: Confirm that the D350XT thermal door, entrance frame, insulated glazing, threshold, perimeter conditions, and surrounding storefront framing support the project energy, condensation, and thermal-performance requirements.

• Storefront framing compatibility: Coordinate the D350XT with the selected Boyd storefront system. Review B450XT for center-set XT framing and B460XT for front-set XT framing.

• Single door or pair: Identify single-door or paired-door requirements, handing, active and inactive leaves, meeting-stile condition, concealed vertical rods, clear opening, weathering, and egress operation.

• U-value and glazing: Coordinate the 0.48 single-door or 0.47 paired-door U-value target at 0.24 center-of-glass performance with the complete 1-inch insulated glass makeup, coatings, gas fill, spacers, safety glazing, heat treatment, setting blocks, gaskets, glass availability, and glazing responsibility.

• Hardware: Provide the complete hardware set, manufacturer, model numbers, templates, physical hardware when required, mounting heights, backsets, reinforcements, electrified components, power-transfer requirements, and door-preparation scope.

• Hinges and pivots: Select offset pivots, butt hinges, or continuous hinges and coordinate entrance-frame compatibility, header construction, threshold conditions, clearances, adjustment, and installation access.

• Panic and egress hardware: Confirm Push/Pull, rim panic, concealed vertical rod panic, dogging, trim, strikes, door pairs, life-safety requirements, and authority-having-jurisdiction requirements with the project design team.

• Access control: Coordinate electric strikes, magnetic locks, card readers, request-to-exit devices, power supplies, door position switches, wire paths, transfers, security contacts, and hardware preparation before fabrication.

• Accessibility: Coordinate clear-opening width, threshold profile, 10-inch bottom-rail requirements, operating hardware, opening force, closing speed, maneuvering clearances, approach conditions, and accessible-route requirements for the complete installed entrance.

• Mid rails and bottom rails: Coordinate rail height, hardware location, accessibility, kick protection, glass size, owner standards, door weight, and architectural appearance.

• Water and threshold conditions: D350XT has limited-water testing, but a swinging entrance door is not a fully sealed fixed-window opening. Coordinate vestibules, overhangs, sweeps, thresholds, drainage, sealants, adjacent floor elevations, exterior exposure, maintenance, and water-management expectations.

• Entrance framing and adjacent construction: Coordinate frames, sidelites, transoms, anchors, rough openings, perimeter seals, substrates, surrounding storefront framing, thermal continuity, and adjacent wall conditions.

• Corner construction and fabrication: Coordinate welded and mechanically fastened corners, door preparation, glazing, hardware reinforcement, shop drawings, opening identification, fabrication sequence, and field installation.

• Finish and protection: Coordinate anodized or painted finish, color samples, door frame, storefront framing, hardware finish, thresholds, fasteners, accessories, adjacent metals, protection, cleaning, and touch-up requirements.

• Installation and adjustment: Verify field dimensions, frame plumb and square, anchoring, threshold sealant, hardware attachment, glazing, door clearances, closer adjustment, pivot or hinge adjustment, weathering, final cleaning, and protection using approved project documents.

What to Send Boyd for a Series D350XT Door Review

Send as much of the following project information as available:

• Project name, location, bid deadline, required response date, construction schedule, installation dates, and project contacts.

• Architectural drawings, elevations, entrance details, door schedules, storefront schedules, hardware schedules, specifications, Division 08 requirements, and opening dimensions.

• Confirmation that the thermally broken D350XT medium stile door is required, including single door or pair, handing, active and inactive leaves, frame type, sidelites, transoms, threshold, and surrounding storefront condition.

• Selected surrounding storefront system, including B450XT center-set or B460XT front-set framing where applicable.

• Thermal requirements including the target door U-value, center-of-glass value, energy-code criteria, condensation requirements, threshold condition, perimeter conditions, and adjacent-wall construction.

• Complete 1-inch insulated glass makeup, safety glazing, coatings, gas fill, spacer, tint, heat treatment, setting blocks, gaskets, glass weight, and glazing responsibility.

• Complete hardware set with manufacturer and model numbers, templates, physical hardware when required, offset pivot, butt hinge or continuous hinge selection, closers, locks, Push/Pull hardware, rim panic, CVR panic, and special preparations.

• Access-control and electrified-hardware requirements including electric strikes, magnetic locks, card readers, request-to-exit devices, power transfers, wire paths, contacts, and power supplies.

• Accessibility, egress, clear-opening, threshold, bottom-rail, operating-force, panic-hardware, occupancy, and authority-having-jurisdiction requirements.

• Mid-rail and bottom-rail requirements including rail heights, 10-inch bottom rail, kick protection, hardware position, glass sizes, and owner standards.

• Entrance-frame, sidelite, transom, rough-opening, anchor, substrate, perimeter-sealant, threshold, sweep, drainage, adjacent-floor, vestibule, and overhang conditions.

• Anodized or painted finish, color, samples, door-frame finish, surrounding storefront finish, hardware finish, threshold finish, exposed-fastener requirements, and adjacent-material coordination.

• Order quantities, door and frame scope, opening numbers, required delivery date, packaging, delivery address, site access, storage, and installation sequence.

Related Thermal Door, Storefront, and Architectural Resources

• XT high-performance thermal line for thermally broken windows, storefront framing, and entrance-door selection.

• Commercial aluminum storefront doors for D200, D350, D500, D350XT, and D500XT entrance comparison.

• Series D500XT Wide Stile Thermal Door for entrances requiring a broader thermal profile and additional stile strength.

• Series D350 Non-Thermal Medium Stile Door when medium-stile proportions are needed without thermally broken construction.

• Series B450XT Center-Set Thermal Storefront for coordinated center-set XT framing.

• Series B460XT Front-Set Thermal Storefront for coordinated front-set XT framing and a curtain-wall-like exterior appearance.

• Commercial aluminum storefront systems for thermal, non-thermal, historic-replica, vent, entrance, and accessory selection.

• Commercial storefront and entrance accessories for frames, thresholds, anchors, adaptors, perimeter components, and installation coordination.

• Commercial aluminum finish options for anodized, painted, storefront, entrance, hardware, and accessory finish coordination.

• Architectural resources, CAD details, product specifications, and project support for D350XT entrance documentation and coordination.