Proprietary Flush Sill:
The Series 4070-T is the next generation of sliding door, featuring a unique lifestyle sill design for indoor/outdoor living and the ultimate minimalist. It is the first of its kind to have a completely flush design, allowing for finished floor between tracks, AND a rating for weather and energy.
Aluminum is thermally stable in that it does not swell or shrink when the temperature or humidity levels change. Very little energy is lost through the frame material but in the case of wood and vinyl, energy is lost through the frame and vent seams after years of expansion and contraction.
While every lifestyle product requires upkeep, Fleetwood products are resilient in even the extreme environments and come with a Lifetime Warranty.
With the versatility and unlimited configuration options, you can create hundreds of custom systems, including but not limited to, multi-slide, stacking, pocketing, meeting, curved, corner, multi-corner and barn doors.