Centor E4 hardware

The generously proportioned E4 takes bi-fold innovation into grand scale commercial and residential applications. Panels of previously unimaginable size up to 13' 1” (4000mm) high, framed with the sturdiest materials, move effortlessly aside with the finger-tip ease. 

E4 can handle the toughest locations imaginable, certified to Miami-Dade County hurricane standards – the most rigorous testing regime in the world.

  • Top-hung bifold system.
  • Designed for extra-large doors in double or triple glazing.
  • Inward or outward opening panels.
  • Use with timber or aluminum doors.
  • Exterior or interior use.
  • Extensively tested, including finite element analysis, cycle testing, corrosion testing and weather testing.
  • Secure E4-based doors with Centor Dropbolts or Centor Twinpoint locks.
  • Backed by a 10-year warranty.

Dimensions are intended as a guide only. Calculated weight checks should be performed to ensure doors built to maximum height and widths do not exceed maximum weight.

Max panel weight
350lb (160kg)
Max panel width
51” (1300mm)
Max panel height
13' 1” (4000mm)
Min panel thickness
1 3/4" (45mm)
Max number panels
8 left + 8 right
Simple assembly

Centor E4 hardware is available with straight or offset hinges. The offset hinge system allows for equal-sized panels regardless of the configuration, ensuring manufacturing is simple. 

Centor E4 carrier for external bifold doors
Fully adjustable

Centor E4 hardware features the Surelock 2TM carrier pin locking system – adjust height with a 3/8” (9.5mm) Allen key supplied with all E4 pivot sets. Insertion of the Allen key disengages the self-locking spring latch. Once adjusted, the new setting is locked into place simply by allowing the latch to fall back into the locating slot as the key is removed.

Independent top and bottom lateral adjustment is possible using a Phillips-head screwdriver.

E4 hardware adjustment
E4 hardware adjustment
Quality materials

Centor E4 hardware is manufactured in architectural-grade stainless steel. Carriers, guides, pivots and hinges are available in stainless steel and PVD bronze finishes.

Bearings are custom-machined while wheels are individually precision-ground to ensure silky smooth operation.

Stainless steel
Stainless steel
PVD bronze/black
PVD bronze/black
E4 product details (CAD – dxf, dwg, pdf)
E4 door calc software v18 (xls)
E4 brochure
E4 installation instructions