Open for air. Locked for safety.
Your garage is the only room in your house you cannot use when you need to. The Chase Hinge System fixes that — a patent-pending hinge that lets your existing garage door open partway for light and air while the bottom stays locked. One kit. Installs with tools you already own.
Patent-pending U.S. hinge technology
Engineered by AA INTEGRA · Fits standard sectional garage doors
Engineered by AA INTEGRA · Fits standard sectional garage doors
Every other door in your house opens partway.
Why doesn't your garage door?
The front door cracks open for a delivery. Bedroom doors stay ajar. Every door gives you options — except the biggest one. Your garage door does exactly two things: all the way up, or all the way down. So when you want to work out there, the door's either wide open — bugs, leaves, the dog bolting for the street — or shut tight and stuffy.
That's not a garage. It's a 400-square-foot room you can only half-use — because of the door.
That's not a garage. It's a 400-square-foot room you can only half-use — because of the door.
The Chase Hinge System gives your garage door a third setting.
CHS swaps the ordinary hinges between your door's panels for purpose-built lockable ones. It bolts onto the door you already have — no new door, no motor swap, no structural work.
Locked, your door works exactly as it always has. Unlocked, the upper panels retract for light and fresh air while the lower panels stay locked as a solid barrier across your opening.
Light and air up top. A locked barrier down low that keeps pets in, kids in, and intruders out — all at the same time.
Give your garage door the setting it always should have had.
You already use your garage for more than parking. The door just hasn't caught up.
You know the moment. You want to work out there, or let the dog hang around while you do — and you're stuck choosing between a door wide open to the street or one shut tight and stuffy. It's not just you, and it's not a you-problem. It's the door.
The all-or-nothing door isn't a niche annoyance — it's a daily standoff in tens of millions of homes. Roughly two-thirds of U.S. homes have a garage or carport, and more and more of them are being used as far more than a place to park.

Families
You'd love to use the garage as flex space with the kids around. A wide-open door to the driveway makes that a non-starter.

Pet Owners
Need the dog contained but the garage ventilated. You want the dog nearby while you work, but the second the door's up, they're gone.

DIY-ers
Sanding, painting, cutting, wrenching — all of it wants ventilation and light, and none of it is safe with the door wide open to the street.

Hot Climate Garages
Over 40% of garage owners use the space to work out. Nobody wants to do it in a sealed, stuffy box in July.
Engineered by the company who solves problems harder than this.
The Chase Hinge System is engineered by AA INTEGRA, the firm behind the Voltek underground-vault system (U.S. Patents 8,413,404 and 8,307,604) — load-bearing infrastructure built to last decades underground. A garage door with a third setting is a smaller problem than that, and it shows: the patent-pending lockable hinge holds your door securely partway open, reliably, every time. Simple to use, seriously engineered.