Exterior Replacement Doors

The best replacement door supplier depends on your application, but look for a manufacturer offering factory-direct pricing, in-stock prehung doors, custom sizing, and NSF/UL-compliant hardware. ELT Custom Coolers has built commercial walk-in cooler and freezer doors in Detroit for over 18 years, shipping nationwide with same-business-day quotes.

Standard prehung cooler doors range from 30" to 60" wide and 76" to 130" tall, while freezer doors span similar widths with heights up to 84". Sliding door systems scale up to 13'x10' or 12'x12' for forklift access. Custom sizes are available at no upcharge for non-standard openings.

Prehung swing doors typically install in about one hour since they drop in over existing wall panels without panel replacement. Sliding door systems with track, trolley, and header take roughly 2-4 hours due to the additional hardware. No on-site door or frame fabrication is required.

A standard (jamb) frame is used when replacing a door in an opening with a raised frame, while a plug frame is designed for older walk-in coolers where the original opening was cut for a plug-style door. Choosing the correct frame ensures a proper drop-in fit without modifying the existing wall panel.

Heated frames (heated jambs) are recommended for freezer doors running -20°F to -40°F or in high-cycle doorways, since they prevent frost buildup, ice-up, and door-sticking where sub-zero air meets ambient humidity. Standard freezer duty around -10°F typically doesn't require a heated frame.

Yes. These prehung replacement doors are designed to fit walk-in boxes from any manufacturer, including Kolpak, Amerikooler, Master-Bilt, Nor-Lake, US Cooler, Bally, Polar King, and W. A. Brown & Son. They install over existing wall panels, so no panel replacement or on-site fabrication is needed.