M-D Adjustable Inswing Sill Mill Finish

Give your exterior inswing door a weather-tight, professional-grade threshold with the M-D Adjustable Inswing Sill. Combining a robust aluminum body and a solid oak riser, this 36" sill protects against drafts, moisture, dust and insects while offering a mill finish that’s ready to prime and paint. The adjustable oak insert accommodates uneven surfaces and slopes up to 5°, creating a custom seal for a perfect fit.

Whether you're installing a new door or replacing an old threshold, the M-D Adjustable Inswing Sill delivers a durable, long-lasting solution. Simply cut to length, set the slope, and use the included hardware for quick, hassle-free installation.

Key Features

• Durable aluminum body paired with a sturdy oak hardwood riser
• Mill finish aluminum—prime, paint or stain to match any décor
• Adjustable oak insert seals gaps from 1 1/8" to 1 3/8" and slopes up to 5°
• Full-length 36 in; easily cut to custom lengths with a hacksaw
• Complete installation kit with fasteners, bolts, nuts and screws included

⚠️ WARNING: This product can expose you to Wood dust known to the State of California to cause cancer and Lead known to cause birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.