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Alside® Doors

Free Estimates and Consultations

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Free Estimates and Consultations Available

If you are searching for replacement doors, then Alside® has you covered. With beautiful patio styles available, you won't need to look anywhere else! Once the window and door experts at Harris has helped you find your replacement door, our professional installers will be glad to install it for you.

Styles from Alside extend your home's ambiance to the outdoors, visually expanding and also brightening any area. And the extended glass area signifies extra light- so every season is more pleasurable. You can also upgrade the windows in your home at the same time to really let in more light and add a new look!

With Alside products, you will spend more time experiencing and enjoying the view and less time on upkeep.


  • 3-Panel

  • 6100 Series

  • Narrow Brass

These doors will never need painting - and cleaning is not difficult: your favorite household cleaners and a moist cloth will make glass and vinyl surfaces shine like new.

And for ease of operation and durability, you'll find simply no better patio option. Alside's heavy-duty fiberglass screening is tough; aluminum frames makes sure the outer screen door stands up to the test of time, while a flexible four-point tension system keeps screens on track. Exclusive anodized tracks at the sill resist rust to help keep door panels sliding without problems for a long time. And it's all guaranteed by Alside's Lifetime Limited Warranty for complete peace-of-mind.

Promenade®

Alside helps make deciding on the best patio door for your home simple. Our Contemporary, Classic and French-Style Patio Doors are magnificently detailed to achieve a distinctive look while providing protection against bad weather as well as loss.

For simple operation and life-long durability, you will find no better Patio Door.


  • Contemporary

  • Classic 5"

  • French Style

With metal reinforcements at the interlocks and lock rails, multi-point locking system, and an anti-lift feature to impede removing the door panel you are sure of a tough, strong patio door. Heavy-duty extruded light weight aluminum screen features 4 adjustable rollers for easy sliding. Optional internal ventilation foot lock allows limited opening of the door panel for ventilation. And it is all supported by Alside's Lifetime Limited Warranty for complete peace of mind.

Association of Condominium, Townhouse, and Homeowners Associations
Member of Community Associations Institute
National Association of the Remodeling Industry
Certified Vinyl Installer of Vinyl Siding Institute
Certified Vinyl Installer of Vinyl Siding Institute
EPA Lead Safe Certified Firm
Wounded Warrior Project
Average rating for HARRIS ROOFING, SIDING, WINDOWS & DOORS is 4.93 stars of 5 stars - based on 67 reviews
Replacement Door in Des Plaines, IL
Overall very pleased with the door replacement project.
Jack V. - Des Plaines, IL 60016