Welcome to zziwindow

ZZIWindom is a Los Angeles–based company specializing in high-performance soundproof, Low-E energy-efficient, and laminated security window systems.

We are committed to creating spaces that offer quiet comfort, safety, and superior energy efficiency for both residential and commercial customers.

Core Products & Advantages

•  Soundproof Performance

  Our windows are STC-certified (Sound Transmission Class) and achieve STC ratings between 35–42, effectively reducing noise from highways, railways, and airports.

•  Low-E Energy-Efficient Glass

  All glazing systems are NFRC-certified (National Fenestration Rating Council) to meet U.S. energy-efficiency standards, lowering heating and cooling costs while maintaining indoor comfort.

•  Laminated Security Design

  Using laminated safety glass with durable PVB or EVA interlayers, our windows provide superior resistance against impact, break-ins, and severe weather.

•  Green & Energy-Saving

  With advanced thermal-break frame design and Low-E coating technology, our products minimize heat transfer, improve insulation, and reduce carbon emissions.

•  Quality Service

  We provide a full-cycle service from on-site measurement, custom design, fabrication, installation, to after-sales support, backed by professional warranty and long-term maintenance.

Certifications & Standards

• STC Rating — Soundproof certification tested under ASTM E90 / E413 standards.

• NFRC Certification — Verified U-Value and SHGC for energy-efficiency performance.

• ANSI / AAMA Compliance — Meets U.S. safety and fenestration performance standards.

• EPA ENERGY STAR — Optional compliance for energy-efficient residential labeling.

Our Philosophy

We believe that quality builds trust and professionalism creates value.

Every window we install represents a perfect balance of silence, safety, and style.