Aluminum Window

LD-S8520 Slimline Series Thermal-Break Aluminum Window

Thermal-break aluminum window with ultra-slim sightlines. The LD-S8520 Slimline Series achieves a 48 mm fixed sightline with an 85 mm frame depth and 35.3 mm thermal barrier: more glass, less frame. Available in casement, tilt-and-turn, fixed, and custom shapes including arched and triangular. NFRC energy performance documentation available. Contact us for specifications, pricing, and availability.

LD-S8520 Slimline Series thermal-break aluminum windows on a modern architectural building facade

Product Highlights

Key Features

  • 85 mm frame depth with 48 mm fixed sightline for maximum glass area
  • 35.3 mm polyamide thermal barrier for superior energy performance
  • Accommodates glazing up to 39 mm, including acoustic options
  • Casement, tilt-turn, fixed, and custom shapes including arched and triangular
  • German-origin hardware: Siegenia, HOPPE, FSB
  • Auto-grade EPDM weather sealing

Technical Data

Specifications

Frame material
Aluminum
Frame depth
85 mm
Profile thickness
>= 2.0 mm
Thermal break
35.3 mm polyamide thermal barrier
Fixed sightline
48 mm
Opening sightline
77.7 mm
Max glass thickness
39 mm (accommodates acoustic glazing)
Weather sealing
Auto-grade EPDM sealing
Drainage
Exposed drainage system with drain hole cover
Safety feature
Arc corner protector on inner open sash
Window types
Casement, tilt-and-turn, fixed, custom shapes (arched, triangular)
Custom sizing
Available for all configurations

All dimensional and performance data are drawn from manufacturer documentation and are subject to change without notice. Specifications, certifications, energy performance ratings, and product availability must be confirmed in writing by Fenovera LLC before being relied upon for design, engineering, permitting, or purchasing decisions. Product certifications listed are manufacturer-reported and have not been independently verified by Fenovera LLC. Contact us for current, confirmed specification sheets.

Options

Glass & Color Options

Glass Options

  • Tempered glass (3C or SGCC certified)
  • Insulated glass (double or triple, with or without Low-E)
  • Laminated glass
  • Low-E glass (meets U-value and SHGC requirements)
  • 4SG triple-pane (thermoplastic spacer, argon-filled)
  • Decorative / privacy glass (tinted, frosted, PDLC smart, silk screen)

Color

Powder coating / Fluorocarbon coating

Powder coating (AkzoNobel) available for orders of any quantity. Fluorocarbon coating available for orders above 100 m² (~1,080 sqft). Available colors include matt black, brown, grey, starry black, matt white, and birch wood. Custom two-tone (interior and exterior color) finishes available.

Quality Standards

Certifications*

* Not all certifications apply to all series. Contact us for more details.


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