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The THERMWELL T3750 is a vinyl T-section bottom sweep designed for aluminum storm doors. It seals the gap at the bottom of storm doors to block drafts, moisture, and debris from entering the doorway. The T-section profile slides into the bottom rail channel of standard aluminum storm door frames, making it a direct vinyl replacement for worn or damaged original components. At 37 inches in length, it fits common residential storm door widths. Installation is a straightforward field replacement handled by door and window installers, general contractors, or experienced DIYers.
This bottom sweep is intended for residential storm door applications where the original aluminum or vinyl bottom seal has deteriorated. The T-section design is compatible with aluminum storm door frames that accept a T-slot bottom insert. It is sold in a package quantity of 12 units, making it practical for multi-unit service calls, property management work, or shop stocking. The gray finish blends with standard aluminum storm door finishes commonly found on residential entries.
Designed as a vinyl replacement for aluminum storm door bottom rails that accept a T-section insert sweep. Replaces worn original T-section bottom seals on standard residential aluminum storm doors.
Installation is typically performed by door installers or general contractors. Before replacing the sweep, open the storm door fully and remove any existing bottom insert from the door rail channel. Slide the T3750 into the channel and trim to final fit if needed using a utility knife or fine-tooth saw. Check door clearance and seal contact with the threshold after installation to confirm proper weather sealing.
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