This double-chamber insulated glass unit in 4M1-10-4M1-10-4M1 configuration is the standard glazing package for PVC window systems across cold-climate construction. Three panes of 4 mm M1-grade float glass are separated by two 10 mm spacer frames, forming two sealed chambers with an overall build of 32 mm.
The double-chamber design materially improves thermal and acoustic insulation versus single-chamber units, which is why it dominates residential specifications in heating-dominated climates. Units are produced to order in customer dimensions on automated lines with dual-seal edge construction.
At a price from about USD 9 per unit and a 200-piece MOQ, the product targets window fabricators, glazing wholesalers and construction developers who want to source IGUs at manufacturer cost rather than fabricate in-house. Stillage packing for sea and road freight is standard, and the producer can run mixed-size batches matched to a fabricator's cutting lists.
![Multi-functional Double Chamber Insulated Glass Unit with Tempered Glass 6SGHPLBronze41/29#2[Pr][Zak]-12-4M1-12-4M1](/img/thumb/188f81dc0edec1bb0ff170ee935fa55b.webp)
![Multi-functional Double-glazed Unit with Tempered Glass 6SGHDSilverGrey32#2[Pr][Zak]-14-4M1](/img/thumb/21aada1d1e51f64ae904c754ebee55b3.webp)
Tell us what you need and get quotes from verified suppliers