TopSeal mechanism installed above an out-swing hidden bookcase door

TopSeal for out-swing hidden doors

Hide the gap.
Keep the movement.

An out-swing bookcase door needs clearance above the case to open. Our patent-pending, spring-loaded TopSeal covers that necessary gap without stopping the door from moving.

Retrofit an existing door See how it works
Included with every new Hide-A-Way out-swing bookcase door.

Why the gap exists

A hidden door still needs room to swing.

As an out-swing bookcase pivots toward the room, its top edge travels through an arc. A small clearance above the bookcase prevents the case from binding against the frame.

Simply attaching fixed trim over that opening creates a new problem: the trim can pinch against the moving bookcase and prevent the door from opening correctly.

The goal is not to eliminate operating clearance. TopSeal conceals the direct line of sight while allowing the door to complete its swing.
Visible light gap above an out-swing hidden bookcase door
The visible top gap

A moving solution

TopSeal covers the line of light, then moves out of the way.

The spring-loaded seal is mounted above the out-swing bookcase. It rests lightly against the top face frame when the door is closed and adjusts as the door opens.

Out-swing hidden door without TopSeal
Without TopSeal

Clearance is visible

Light through the required operating gap can reveal the top of the opening.

TopSeal installed above an out-swing hidden door
Door closed

The sightline is covered

The seal rests against the face frame to help block light, drafts, dust, and sound transfer.

Adjusting the spring-loaded TopSeal mechanism
Door opening

The seal gives as needed

Spring-loaded hardware lets the bookcase travel without rigid trim binding against it.

Watch the mechanism

See TopSeal in motion.

This quick demonstration shows why ordinary fixed trim cannot solve the top-gap problem—and how TopSeal maintains the finished look while the bookcase opens.

Watch on YouTube

After installation

Adjust the seal to your finished door.

New out-swing doors ship with the TopSeal raised inward for protection. Complete the door installation and alignment before making the final TopSeal adjustment.

Set the door

Install and adjust the bookcase door first. Confirm that it opens and closes correctly.

Open to 45°

Open the door approximately 45 degrees so the adjustment bolts are accessible.

Lower evenly

Using a 5/32-inch Allen wrench, begin with the bolt nearest the hinge and lower each point gradually.

Make light contact

Repeat the sequence until the seal rests lightly on the top face frame. Do not let a bolt contact the bookcase top.

Retrofit option

Already have an out-swing hidden door?

TopSeal can be added to many older Hide-A-Way doors and out-swing bookcase doors from other manufacturers. Measure carefully and review the product requirements before ordering.

  • Designed specifically for out-swing bookcase doors
  • Field-adjustable for light contact with the face frame
  • Available separately for compatible existing installations

TopSeal assembly

Finish the top of your opening.

$85.95
View TopSeal

Check the product page for current pricing, sizing, and ordering details.

Common questions

TopSeal FAQ

Does every hidden door need a TopSeal?

No. TopSeal addresses the operating gap above an out-swing bookcase door. In-swing configurations do not use it in the same way.

Is TopSeal included with a new door?

Yes. Every new Hide-A-Way out-swing bookcase door includes TopSeal as standard equipment.

Can I add one to an older or competing door?

Many existing out-swing bookcase doors can be retrofitted, including older Hide-A-Way units and compatible doors from other manufacturers. Verify dimensions and mounting conditions before ordering.

Does it make the opening airtight or soundproof?

No. TopSeal helps block the direct line of light and can reduce drafts, dust, and sound transfer through the top gap, but it is not an airtight or soundproofing system.

Where can I learn more about the design?

Read the story behind the patent-pending solution in our TopSeal development article.

A cleaner out-swing installation

Keep the clearance your door needs—without leaving the gap on display.

Order a retrofit TopSeal or choose a new Hide-A-Way out-swing bookcase door with TopSeal already included.

Shop TopSeal Explore hidden doors