Thermwell A56/36H Automatic Vinyl Door Bottom 36 Inches

Product Description

The THERMWELL A56/36H is an automatic aluminum and vinyl door bottom seal designed to block drafts, dust, light, and noise at the base of exterior or interior doors. When the door opens, the seal automatically raises to clear the floor surface. When the door closes, it lowers back into contact with the threshold, forming a consistent seal. The silver finish aluminum housing and vinyl sealing strip are suited to standard residential door installations. This component is typically installed by general contractors, handymen, or HVAC technicians addressing energy loss at door penetrations.

This door bottom seal is used on residential and light commercial doors where threshold sealing is needed to reduce conditioned air loss, pest intrusion, or sound transmission. The automatic lift mechanism makes it practical for doors that sweep over carpet, tile, or uneven flooring without binding or dragging. It fits doors up to 36 inches wide and is finished in silver to coordinate with standard aluminum door hardware. Sold in a package quantity of 12 units, making it suitable for multi-unit or bulk installation jobs.

Key Features

• Automatic raise-and-lower mechanism activates with door open and close cycle
• Aluminum housing with vinyl sealing strip for durable threshold contact
• Silver finish coordinates with standard aluminum door hardware
• Fits door widths up to 36 inches
• Reduces draft, dust, light, and noise infiltration at door base
• Package quantity of 12 units supports multi-door or multi-unit installations

Compatibility

Designed as a standard replacement or new-installation door bottom seal for residential and light commercial doors up to 36 inches in width.

Installation Notes

Installation is performed by a general contractor, handyman, or qualified technician using basic hand tools. The existing door bottom or sweep should be removed before fitting the new seal. Verify door width and bottom clearance before cutting or mounting the housing to ensure proper fit and seal contact with the threshold. Follow door and hardware manufacturer guidelines for fastener placement to avoid compromising door integrity.