Keep your family safe with Security Doors, Bars, and Gates

Master Seal Doors and Windows is a supplier and installer of residential replacement windows and doors. We have provided these home and business improvement solutions for more than 30 years. With our experience, we have provided each of our clients with the quality service necessary to get the job done right. When it comes to security doors in Washington DC, Baltimore, MD, and Prince George’s County, MD, this is of utmost importance.

The Benefits of Security Doors

It is a good idea to get high-security doors for your home. They are a lasting investment that protects you and your family. Whether you choose to buy a steel security door for your home or business, it is a personal decision. Today, break-ins and burglaries are becoming more prevalent, which is why it’s so important to take the right steps to protect yourself and your investments. When you purchase a steel security door from us, you can be sure your home or business is as safe as possible without breaking your budget.

We Have Your Security at Heart

If you have yet to realize the benefits of security doors, talk to our specialists. We provide steel security door and custom steel security storm doors installations in Baltimore, MD and Washington DC, as well as the Prince George’s County area. We want to make sure you feel safe and secure at all times, whether you choose a steel entry door or a stainless steel storm door. We even offer steel security door repair if something happens.

Nothing is more important than your family’s security, and steel security storm doors can help keep your family and your home safe from those who want to break in and do you harm. Master Seal provides and installs steel security storm doors. We serve the Baltimore and Washington metropolitan area.

There’s no need to sacrifice beauty for your home security when you can choose from many of Master Seal’s decorative steel security door styles. Every Master Seal steel storm door comes standard with durable, high-quality features that are industry leaders in strength and durability.

  • Heavy-Duty 2” Steel Door Frame with lifetime warranty.
  • Master Seal’s exclusive Welded Steel Hinges outperform the competition in strength and durability. There are no hinge mounting screws, which can be pried out by force.
  • Polyester powder-coat finish is far superior to standard paint and resists fading, chipping, and cracking. Choose from ten designer colors.
  • Tempered safety glass panels can easily be replaced with top screen (standard) and bottom screen (optional).

Master Seal offers the best quality in our replacement steel security doors. In addition, we offer precise door installations.

Standard Features

Every Master Seal security storm door comes standard with high-quality features ranked among the industry’s best in durability, operation and strength.

Security Doors

Heavy-Duty 2″ Frame

There’s a lifetime warranty on this heavy-gauge, fully-welded steel door frame.

Heavy Gauge Z-Bar

Plush pile weather-stripping on the Z-Bar keeps drafts, noise and dirt outside.

Welded Hinges

Master Seal exclusive welded steel hinges are unparalleled in strength and durability. There are no hinge mounting screws, which can be pried out by force.

Powder-Coat Polyester Finish

Far more durable than standard liquid paint in weather and corrosion resistance. Choose from ten elegant colors!

Pneumatic Heavy-Duty Closer

Adjustable door closing speed. A chain with built-in shock absorption prevents wind damage.

Strike Plate

The strike plate is solid brass, with an integrated steel dust box. Mounted at the factory for even more strength and security.

Heavy Duty Mortise Lock

This optional deadbolt has a full 1″ throw that meets the door frame with a protective steel guard. Available in three finishes.

Dual Weather-Stripping

A dual-fin sweep on the adjustable bottom expander keeps drafts and dirt outside.

Safety Glass

Weather-stripped, tempered safety glass panels can be easily replaced with the standard top screen and the optional bottom screen for better ventilation in nice weather.

Zinc Primer Undercoat

Enhanced corrosion protection.

Patio Door Security Gates

Security Patio
Patio Door Security Gates
Patio Door Secuirty Gate
Patio Security Door

Window Security Bars

Security Windows
Window Security Bars
Window Security Bar
Master Seal Doors & Windows