Quanex 5400 (K2) Sliding Patio Door

Commercial performance for high-rise and hurricane coastal applications


The 5400 (K2) commercial vinyl sliding door system has been thoroughly tested to AAMA standards, achieving a LC-PG50 in multiple-panel configurations. It is manufactured with long-lasting, .100-inch thick-walled extrusions that will stand up to even the harshest weather conditions and wind loads. And since it’s PVC, it’s energy efficient and will never pit, warp, rot, corrode, peel or crack.

The K2 door’s design includes equal glass and sight lines and multi-chambered profiles for strong welds and maximum thermal performance. Narrow- and wide-stile design options are available. It can accept multiple glazing options, such as monolithic or insulated, and utilizes a variety of hardware options. It is also available with add-a-track extenders.

SuperCapSR™ Durability

The K2 5400 Series Patio Doors are offered with optional patent-pending SuperCapSR™ exterior color coating designed to prevent profile distortion from high outdoor temperatures and provide long-lasting, vibrant color.


  • Tested strength encapsulated by durable, heat-reflecting, impact-resistant and corrosion-proof proprietary MikronBlend® vinyl
  • Ideal for commercial high-rise and hurricane coastal applications
  • Designed to accept steel or aluminum reinforcing to meet heavy commercial, high-load applications
  • Vinyl offers 40% better insulating properties than aluminum frame patio doors
  • Features multi-chamber engineered profiles for tight corner welds and maximum thermal performance
  • Dual-glazing system with Duralite® or Super Spacer® warm edge spacer system for superior UV and thermal protection against heat loss and solar heat gain
  • Sliding Patio Door
  • Two-, Three-, and Four-Panel Configurations up to 10 Feet High and 20 Feet Wide
  • Configurations:  XO, OX, XX, OOX, OXO, XOO, OXXO