Series 860 Aluminum Double-Hung Windows

Boyd engineers the Series 860 commercial aluminum double-hung window for harsh conditions, coastal weather, restoration, and historic-replica projects. With both the upper and lower sash operating, the Series 860 provides flexible ventilation and a traditional double-hung appearance for schools, universities, military buildings, hospitals, government offices, and other demanding commercial or institutional applications.

Tested to H-HC50, the Series 860 features a 4" thermal-break main frame, double-weatherstripped sash construction, continuous wraparound marine glazing up to 1" thick, custodial-key-operated tilt mechanisms, and heavy-duty spiral or Ultra-Lift balances. Upper and lower sash tilt inward for convenient interior cleaning, while true divided-lite, interior, and applied muntin options, screens, hospital-sill configurations, coordinated perimeter accessories, finish selections, and project-specific customization support unique new-construction and restoration requirements.

Series 860 Product Details

Key commercial double-hung window attributes for product review:

Series 860 Product Data and Downloads

Use the current Boyd resource links below for Series 860 detail drawings, guide specifications, accessories, historic-replica resources, gallery images, and finish options.

When to Use the Series 860 Double-Hung Window

• Harsh-weather or coastal commercial openings requiring a heavy-commercial aluminum double-hung window, without impact-rated or blast-resistant performance.

• Historic-replica, restoration, renovation, or institutional projects requiring traditional double-hung appearance and both upper and lower sash operation.

• Schools, universities, military buildings, hospitals, government offices, and other demanding commercial applications.

• Projects requiring H-HC50 performance, a 4" thermal-break frame, 12.11 psf water resistance, and marine glazing up to 1" thick.

• Openings requiring custodial-key-controlled tilt access, heavy-duty balances, interior cleaning, tamper-resistant operation, and exterior-mounted screens.

• Hospital or institutional openings that benefit from a hospital-sill configuration, true or simulated muntins, perimeter accessories, finish options, and customization.

Choosing a Boyd Double-Hung, Single-Hung, or Fixed Window

You are viewing the Series 860 H-HC50 double-hung window for coastal, institutional, restoration, and historic-replica applications. Review the related Boyd systems below when the project requires higher double-hung performance, impact or blast capability, a lower performance class, single-hung operation, internal blinds, historical muntins, or matching fixed openings.

Series 860 Double-Hung Window Advantages

• Engineered for harsh conditions, coastal weather, restoration, historic-replica work, and demanding institutional applications.

• H-HC50 performance with 12.11 psf water resistance and 75.19 psf structural performance.

• A 4" thermal-break frame and continuous perimeter marine glazing accommodate insulated glass up to 1" thick.

• Both upper and lower sash operate for flexible ventilation and traditional double-hung appearance.

• Upper and lower sash tilt inward for controlled interior cleaning without deglazing.

• Tamper-resistant, custodial-key-operated tilt mechanisms support institutional maintenance and security procedures.

• Heavy-duty spiral or Ultra-Lift Class 5 balances support dependable sash operation.

• True divided-lite, interior roll-form, and applied simulated muntin options support contemporary, traditional, and historic-replica elevations.

• Hospital-sill configurations, screens, panning, receptors, subsills, mullions, trims, nailing fins, leg extenders, finishes, and customization options expand project flexibility.

Common Series 860 Coordination Items

• Double-hung operation: Confirm that both upper and lower sash operate, along with lift and pull-down-handle locations, sash travel, operating force, balance selection, user access, and ventilation requirements.

• Historic-replica and restoration requirements: Coordinate existing-window profiles, sightlines, sash proportions, meeting-rail location, muntin pattern, finish, perimeter conditions, and reviewing-authority comments. Historical muntins are not listed as a standard Series 860 option.

• Custodial tilt access: Coordinate key control, authorized-user access, interior cleaning clearances, furnishings, shades, security, and maintenance procedures.

• Hospital sill: Confirm whether the project requires the limited-opening hospital-sill configuration, intended ventilation across the meeting rails, operating restrictions, and institutional safety requirements.

• Egress and clear opening: Where emergency escape or rescue requirements apply, provide the required net clear opening, minimum clear dimensions, sill height, unit size, and authority-having-jurisdiction comments.

• Coastal exposure: Coordinate design pressures, water resistance, corrosion exposure, finish, adjacent metals, drainage, sill conditions, flashing, perimeter sealants, anchors, substrates, and maintenance requirements. Coastal suitability does not make the Series 860 impact rated.

• Glazing and muntins: Confirm insulated-glass makeup, overall thickness, safety glazing, marine-glazing compatibility, true divided-lite or simulated muntin construction, grid pattern, finish, coatings, spacers, and replacement access.

• Sash cleaning and screens: Preserve interior clearance for upper- and lower-sash tilt-in cleaning, balance and lock service, screen removal, and glazing replacement.

• Openings and accessories: Verify field dimensions, rough openings, substrates, anchors, panning, receptors, subsills, mullions, trims, nailing fins, leg extenders, sealants, drainage, and surrounding construction before release.

What to Send Boyd for a Series 860 Review

Send as much of the following project information as available:

• Project name, location, building type, bid date, construction schedule, architectural drawings, elevations, window schedules, specifications, and opening sizes.

• Historic-replica or restoration requirements, existing-window photographs or profiles, sash proportions, sightlines, meeting-rail location, muntin pattern, finish, and reviewing-authority comments.

• Required double-hung operation, upper- and lower-sash sizes, sash travel, lift and pull-down-handle locations, custodial-key control, hospital-sill option, screens, and maintenance-access requirements.

• Any egress or emergency-escape requirements, net clear opening targets, minimum clear dimensions, sill-height limits, and authority-having-jurisdiction comments.

• Glazing makeup, overall thickness, coatings, spacers, safety glazing, marine-glazing requirements, true or simulated muntin pattern, and finish.

• Required H-HC50, air, water, structural, thermal, forced-entry, coastal-exposure, security, and jurisdictional criteria.

• Panning, receptor, subsill, mullion, trim, nailing-fin, leg-extender, anchor, sealant, drainage, substrate, installation, and submittal requirements.

Related Hung, Historic-Replica, Coastal, and Project Resources

• Commercial aluminum single-hung and double-hung windows for broader hung-window comparison and selection guidance.

• Historic-replica aluminum windows for sightline, profile, muntin, sash proportion, finish, and reviewing-authority coordination.

• Commercial aluminum fixed windows for coordinated non-operable openings and matching elevations.

• Commercial window hardware and accessories for screens, panning, receptors, subsills, mullions, trims, nailing fins, and related coordination.

• Commercial aluminum finish options for standard and custom anodized or painted finish review.

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