Automatic Drop-Down Door Bottom Seal – 36 Inch

🚪 Close the Door. Seal the Gap Automatically.

Tired of cold drafts, hallway noise and dust slipping through the gap beneath your door?

This surface-mounted automatic door bottom creates a continuous seal when the door closes, then retracts when the door opens—helping protect the floor while keeping the doorway easier to use.

✨ Automatic Drop-Down Action

Closing the door activates the side plunger, causing the rubber gasket to lower in a controlled, scissor-like motion.

Open the door and the seal retracts, preventing unnecessary dragging across the floor.

🌬️ Block the Unwanted Gap

A gap under the door can allow air, dust, debris, sound and smoke to pass between rooms.

The solid rubber extrusion lowers across the bottom of the door to create a more complete barrier where it is needed most.

🔇 Help Reduce Unwanted Noise

Create a quieter and more comfortable space by helping limit sound transfer through the open gap beneath the door.

Ideal for offices, bedrooms, meeting rooms, apartment entrances and other spaces where privacy and comfort matter.

📐 Self-Leveling on Uneven Floors

Not every floor is perfectly level.

The hinge side drops first, allowing the seal to self-level as it lowers. This helps maintain more consistent contact across floors with slight height variations.

🛡️ Concealed When the Door Opens

Unlike fixed sweeps that continuously rub against the floor, the gasket stays raised and concealed while the door is open.

This helps:

✅ Reduce floor friction
✅ Prevent dragging while opening
✅ Support smoother door movement
✅ Reduce unnecessary gasket wear

🔄 Reversible Door Compatibility

The unit comes configured for a standard right-hand installation and can be reversed in the field when required.

Always confirm your door orientation and installation requirements before mounting.

🔩 Surface-Mounted Installation

The unit mounts directly to the surface of the door, making it suitable for applications where a concealed mortised seal is not required.

Mounting screws are supplied with the product.

🔥 Fire-Rated Construction

This model is listed as fire rated and is designed for use in applications requiring a more complete door-bottom seal.

Important: Fire-rating performance depends on correct installation and compatibility with the complete rated door assembly. Always follow applicable building codes and professional installation requirements.

Why You’ll Love It

✅ Activates automatically when the door closes
✅ Retracts when the door opens
✅ Helps block drafts, debris, sound and smoke
✅ Self-levels across slightly uneven floors
✅ Solid rubber sealing extrusion
✅ Clear anodized aluminum housing
✅ Surface-mounted design
✅ Field-reversible configuration

How It Works

1. Open the Door

The rubber gasket remains raised, reducing contact with the floor.

2. Close the Door

The side plunger contacts the door frame and activates the mechanism.

3. Automatic Seal

The gasket lowers in a scissor-like motion and self-levels across the floor.

4. Open Again

The seal automatically retracts into the housing.

Product Details

• Product Type: Automatic Door Bottom Seal

• Installation Type: Surface Mounted

• Length: 36 inches

• Width: 19/32 inch

• Height: 2 inches

• Housing Material: Aluminum

• Seal Material: Solid Rubber

• Finish: Clear Anodized Aluminum

• Standard Orientation: Right Hand

• Reversible: Yes, field reversible

• Fire Rated: Yes

• Included: Mounting screws

• End Caps: Not included

• Recommended Use: Door-bottom gap sealing

Before Ordering

📏 Measure the exact width of your door before purchasing.

🚪 Confirm that the door and frame provide enough space for the surface-mounted housing and activation plunger.

🛠️ Professional installation is recommended when the product will be used as part of a fire-rated or code-regulated door assembly.

Frequently Asked Questions

Does the seal drag across the floor?

The gasket is designed to retract when the door opens and lower when the door closes, reducing continuous floor contact.

Will it work on a slightly uneven floor?

The scissor-style mechanism is designed to self-level and compensate for moderate floor variation.

What does the product help block?

It helps reduce the movement of drafts, dust, debris, noise and smoke through the gap beneath the door.

Is it suitable for left-hand doors?

The product is supplied in a standard right-hand configuration but is described as field reversible.

Are end caps included?

No. End caps are not included with this model.

Can I rely on it for a fire-rated doorway?

The product is listed as fire rated, but the complete door assembly must be compatible and installed according to applicable codes. Confirm requirements with a qualified installer.

🚪 Seal the Gap Only When You Need It

Enjoy a cleaner, quieter and more comfortable doorway without a fixed seal constantly scraping across the floor.

Close the door and the seal lowers automatically. Open it and the gasket retracts out of the way.