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50+ Years
experience
Custom Windows & Doors in Annapolis, MD
Loewen Windows of Mid-Atlantic of Mid-Atlantic, a division of The Sanders Company, has been a trusted name in architectural-grade window and door solutions since 1954. As a fourth-generation, family-owned business, we combine over six decades of expertise with a commitment to innovation and environmental stewardship. Our team specializes in custom wood, aluminum, steel, and historic window and door systems tailored to meet the demands of residential and light commercial projects. With certifications from leading industry organizations, including Energy Star and the Forest Stewardship Council, we prioritize sustainable practices without compromising on quality or design integrity. Our product portfolio includes bi-folding, multi-slide, and lift-slide door systems that seamlessly blend indoor and outdoor living spaces.

Backed by professional installation and responsive customer service, we serve architects, builders, and homeowners across Maryland, Pennsylvania, and beyond. Our dedication to craftsmanship ensures every project reflects both the client's vision and our legacy of excellence. By integrating advanced engineering with authentic materials, we deliver solutions that enhance energy efficiency while withstanding environmental challenges. This unwavering focus on quality and client satisfaction has solidified our reputation as a leader in premium fenestration products.
Services
Custom Wood Windows Aluminum Door Systems Historic Window Replication Steel Windows & Doors Multi-Slide Door Systems Timber Curtain Walls Copper Clad Windows Lift-Slide Doors Energy-Efficient Solutions Professional Installation
Details
  • Year established: 1954
Highlights and features
  • Fourth-generation family-owned business since 1954
  • Specialize in custom wood, aluminum, and steel systems
  • Certified by Energy Star and Forest Stewardship Council
  • Offer bi-folding, multi-slide, and historic replication solutions
  • Serve Maryland, Pennsylvania, and surrounding regions
Associations and certifications
  • Forest Stewardship Council
  • National Fenestration Rating Council
  • Window and Door Manufacturers Association
  • Energy Star
  • U.S. Department of Energy's Efficient Window Collaborative
Services
Custom Wood Windows
Crafted from premium timber, our custom wood windows offer timeless elegance and superior insulation. Each unit is engineered to match architectural specifications while meeting Energy Star standards. Ideal for historic renovations or modern homes seeking warmth and durability.
Aluminum Door Systems
Durable, low-maintenance aluminum doors combine sleek aesthetics with structural integrity. Designed for coastal or high-traffic environments, these systems resist corrosion and provide seamless transitions between indoor and outdoor spaces through innovative sliding and folding mechanisms.
Historic Window Replication
Preserve architectural heritage with exact replicas of vintage windows. Using traditional joinery techniques and modern weatherization, we recreate period-accurate designs for landmark buildings or homes requiring historical compliance in materials and construction.
Multi-Slide Door Systems
Maximize open space with multi-slide doors that stack neatly to create expansive thresholds. Available in aluminum or steel, these systems feature thermal breaks and weather-resistant seals, perfect for contemporary homes prioritizing natural light and ventilation.
Energy-Efficient Solutions
Our Energy Star-certified products reduce energy consumption through advanced glazing and frame insulation. From double-pane glass to thermally broken profiles, these solutions maintain interior comfort while lowering utility costs for eco-conscious homeowners and builders.
Questions
What types of windows and doors do you specialize in?
We offer custom wood, aluminum, steel, and historic replication windows and doors, including bi-folding, multi-slide, and lift-slide systems for residential and commercial projects.
Are your products energy-efficient?
Yes, our windows and doors meet Energy Star standards and feature advanced insulation technologies to improve thermal performance and reduce energy costs for homeowners.
Do you serve areas outside Maryland?
We primarily serve Maryland, Pennsylvania, Virginia, and Washington D.C., with showrooms in Annapolis, Baltimore, Bethesda, and West Chester.
What certifications do you hold?
We are certified by the Forest Stewardship Council, Energy Star, National Fenestration Rating Council, and other leading organizations for quality and sustainable manufacturing practices.
Can you replicate historic window designs?
Yes, our historic replication service recreates period-accurate windows using traditional craftsmanship and modern materials to meet preservation guidelines while ensuring durability.
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