Thermwell CG4H Corner Guard Door Seal

Product Description

The THERMWELL CG4H is a corner guard door seal designed to block rain and draft infiltration at door corners. It installs at the bottom corner of a door frame alongside an existing door sweep or threshold seal, closing gaps that standard linear seals leave exposed. The CG4H weighs 1.25 pounds and ships in a package quantity of 12, making it a practical stocking item for contractors and facilities maintenance crews handling multiple door weatherization jobs. Weatherproofing and general contractors are the typical installers for this type of component.

This corner guard seal is suited for residential and light commercial door installations where air and water infiltration at frame corners is a recurring problem. It is used in conjunction with a door sweep or door seal already installed along the bottom edge of the door. The CG4H addresses the specific gap that forms at the intersection of the door bottom and the side jamb, a common failure point in door weatherstripping systems.

Key Features

• Blocks rain and draft infiltration at door frame bottom corners
• Designed to work alongside existing door sweeps and threshold seals
• Sold in a package quantity of 12, suitable for multi-door projects
• Compact form targets the corner gap that linear seals do not cover

Compatibility

Designed as an OEM-style replacement and add-on component for standard residential and light commercial door weatherstripping systems where a corner gap seal is required at the door frame bottom.

Installation Notes

Installation is typically performed by general contractors, weatherization specialists, or maintenance technicians. No special tools are required, but the door frame surface should be clean and dry before placing the seal. Install the CG4H at the bottom corner of the door frame in conjunction with a door sweep or door seal already in place along the door bottom. Refer to local building energy codes for requirements related to door air sealing.