Engineered for high-traffic environments, acoustic insulation, thermal efficiency, and contemporary aesthetics.
Zhejiang Larsom Door Co., Ltd. is a leading professional manufacturer specializing in the research, development, production, and global export of advanced security doors, armored doors, steel-wood doors, and customized architectural entrance solutions. Driven by safety, durability, and contemporary design trends, we supply developers and contractors worldwide with doors that meet strict global construction standards.
Over the years, we have scaled our production to match modern smart manufacturing practices, integrating heavy CNC industrial machinery with precise manual craftsmanship. This hybrid manufacturing approach enables us to achieve high-precision tolerances while delivering custom aesthetics requested by top design firms.
From high-grade steel forming to precision UV finishing, our automated processing floor ensures zero defect execution.
Hydraulic heavy-plate compression ensuring door flatness, structural cohesion, and warp resistance under environmental stress.
Internal skeletal reinforcement, alignment, and stabilizing structures for long-term acoustic and physical strength.
Seamless alignment of frames and stiles to prevent thermal leakage, optimizing energy performance metrics.
Multi-stage orbital mechanical sanding ensuring clean profiles and uniform bonding surfaces for laminates.
Computerized routing system executing complex patterns and groove details down to ±0.1mm tolerances.
Automated UV lacquer curing providing superior scratch resistance and UV stabilization for long outdoor lifespan.
High-tonnage hydraulic cutting of reinforced sheets, ensuring clean edges for further processing.
Optical laser cutting for lock housings, hinge seats, and custom architectural cutouts with minimal heat distortion.
CNC synchronized press brakes producing complex multi-bend structural profiles for reinforced doors.
Multi-station high-speed turret punch press forming holes and hardware mounting slots with repeatable accuracy.
Zhejiang Larsom integrates real-time QC monitoring at each node to guarantee that every single shipment conforms to the custom project specification files.
Explore the engineering parameters of our modern glass French doors and high-performance entrance systems designed for commercial and residential buildings.
| Technical Characteristic | Specification Details | OEM customization Limits |
|---|---|---|
| Thermal Insulation (U-Value) | Down to 0.8 W/m²·K (Passive House standard compliant) | Triple glazing, argon gas filling, warm edge spacers |
| Acoustic Rating (STC / Rw) | STC 38dB to 48dB with acoustic interlayer laminations | Custom PVB film thickness, multi-cavity rubber seals |
| Glazing Profiles | Double ESG Tempered Glass / Low-E Coating / Frosted / Tinted | From 5mm+9A+5mm up to custom bulletproof layered glass |
| Frame Material Alloy | Structural Extruded Aluminum Alloy 6063-T5 / Steel Reinforcements | Thermal break or non-thermal break profiles, thickness up to 3.0mm |
| Surface Coating | AkzoNobel Powder Coat / PVDF Coating / Anodized Finishes | Any custom RAL palette code, textured wood grain finishes |
| Locking Assemblies | Multi-point hook locks, smart biometrics, panic bar systems | Integration with local access control & building security networks |
Adapting physical properties to meet global structural codes, thermal expectations, and architectural aesthetics.
For US and Canadian commercial structures, our modern glass French doors and pivot systems align with NFRC thermal performance ratings. We integrate low-threshold profile systems to satisfy strict ADA accessibility standards, providing custom-engineered hardware prep for heavy wind-load regions along coastal zones (Miami-Dade county specs compatible).
Addressing strict European EN 14351-1 CE markings, our production lines execute precision assembly of thermal breaks. By using multi-cavity EPDM gasket seals and argon gas, the doors easily bypass standard thermal leakage testing, helping commercial developments achieve high sustainability certifications like BREEAM and LEED.
Engineered to withstand extreme temperature differentials and dust exposure. The double-glazed French doors feature heat-resistant UV coatings and high-performance powder finishes that prevent yellowing, chalking, and paint failure in arid coastal regions. Siliconized pile weather-stripping acts as an airtight barrier against particulate infiltration.
As smart building technologies evolve, Zhejiang Larsom is actively pioneering the integration of IoT-enabled locks and electrochromic (smart switchable) glass. Smart-tinting glass integrated into French doors lets occupants adjust transparency via mobile apps or building automation systems, improving solar heat gain coefficient (SHGC) efficiency. Additionally, our R&D team is refining biopolymer composites to create lightweight, high-strength frames that lower carbon footprints without sacrificing structural strength.
Zhejiang Larsom Door Co., Ltd. operates in one of the world's most robust industrial manufacturing clusters in Zhejiang Province. Our direct relationships with high-grade aluminum refiners, glass processing yards, and hardware forge plants minimize supply line downtime. By utilizing JIT (Just-in-Time) sourcing and internalizing processes like CNC laser cutting, bending, and automatic UV coating, we protect B2B clients from sudden raw material price shocks and keep lead times highly stable.
Our doors undergo rigorous structural cycling, water resistance, and air infiltration testing before container loading, ensuring they arrive ready for site inspections.
Clear, direct answers regarding custom modern glass doors, ordering systems, shipping compliance, and performance metrics.
Our standard MOQ for custom dimension OEM glass French doors is generally 20 sets. However, for large-scale development prototypes or mixed commercial container orders, we can adjust initial order configurations to meet project phase targets.
We use heavy, shock-absorbing wood crates with foam spacer inserts between every door slab. All glass components utilize ESG certified toughened safety glass or laminated options that are highly resistant to structural vibrations during international transit.
Yes. Using our CNC laser cutting and high-speed punch machinery, we pre-mill lock pockets, wire channels, and hinge recesses according to the exact templates of your chosen lock hardware (such as Salto, Assa Abloy, or standard smart locks).
Yes, we specialize in custom fire doors. Our range includes engineered wood, steel, and composite doors with ratings from 30 to 90 minutes (such as our Foshan Fire Door series). We utilize specialized fire-rated glass layers and intumescent seals that expand under heat to block smoke and thermal transfer.
We provide complete material spec sheets showing calculated U-factors, solar heat gain coefficients (SHGC), and air leakage parameters. Upon request, we can supply test certificates from independent laboratories to verify compliance with local building regulations.
Complete your layout spec sheet with our comprehensive residential security and interior flush systems.
Larsom Door
