SIERRA BELLATRIX

A closer look.

Our doors are manufactured on demand, ensuring a tailored product that meets the highest standards of craftsmanship and quality. Once your order is placed, production begins immediately, with lead times depending on the model.

These doors are engineered for durability and performance. Each one features a stainless steel exterior filled with a combination of PUR polyurethane foam and wood, delivering superior thermal insulation and structural integrity. The door slab is thick and equipped with a dual sealing system—one in the frame and another in the door’s edge—to minimize heat loss, reduce vibrations, and enhance energy efficiency. These materials do not warp or change volume in response to weather conditions, ensuring long-term reliability.

To enhance home security, the door frame is reinforced at hinge locations and locking points. The entire door unit is delivered prehung, meaning it’s already mounted in the frame, making the installation process fast and efficient.

Included in the set:

• Prehung door and frame with two integrated gaskets

• ROTO locking system with an independent upper lock and three anti-theft bolts

• Two key cylinder inserts

• Standard handle (optional T-bar long handle available)

• Peephole (for solid door versions)

• Three adjustable anti-burglary hinges

• Aluminum threshold with sealing gasket

• Additional anti-theft bolts

Performance Highlights:

• Solid door panels offer an R-value of 4.8

• Glazed door panels offer an R-value of 3.8

• Acoustic insulation of 31 dB for non-glazed versions

• Glazed models include energy-efficient triple-pane glass

These doors arrive fully assembled in their frames, eliminating complex installation steps and delivering a high-quality, ready-to-install entry solution.

For certification and approved configurations of this model, request the documentation from our team.