Dometic & Norcold to 12V RV Fridge Conversion Size Guide

Thinking of replacing a propane/electric RV refrigerator with a 12-volt compressor model? Start with the cabinet opening rather than the capacity printed on the door. These comparisons show how common Dometic and Norcold installations line up with current 12V models.

Find your existing refrigerator

How to measure your fridge opening

First photograph the data plate on your original refrigerator. If the existing unit can be safely removed, measure the exposed enclosure inside the cabinet at several points, not across the refrigerator's outer trim.

1. Height (H): floor of the enclosure to the underside of the top framing.
2. Width (W): the narrowest usable opening, including any internal braces.
3. Depth (D): usable interior distance while allowing the specified appliance front position and airflow.
4. Door clearance: measure past the opening to make sure doors and drawers can actually swing and that the old/new unit can enter the RV.

12V replacement opening reference

Values above are manufacturer enclosure requirements, not appliance overall measurements. Model revisions can differ.

Compare 12V refrigerators by cabinet opening

These are cabinet-size comparisons, not confirmed direct replacements. Measurements refer to the manufacturer-required enclosure (height × width × depth), not the refrigerator's outside dimensions. Select the exact model and door configuration before ordering.

12V compressor · 8.2 cu. ft.

Norcold Polar N8DCSSR

Two-door 12V compressor cooling with separate freezer storage and electronic controls. A good size reference when replacing an older Norcold 6-cu.-ft. cabinet.

Required cabinet opening (H × W × D)52.88–53.01 in. H × 23.50–23.63 in. W × 24 in. D

Cabinet comparison: Published cutout dimensions match the Norcold N61X family. A Dometic DM2652 enclosure is taller, so framing or support may need adjustment.

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12V compressor · 8 cu. ft.

Dometic DMC4081 — left-hinge

An 8-cu.-ft. dual-compartment 12V refrigerator with digital controls and a left-hinge configuration. Compare the cabinet requirements before choosing it for an older absorption fridge opening.

Required cabinet opening (H × W × D)53.9 in. H × 24 in. W × 24 in. D

Cabinet comparison: Requires a 24-inch-wide opening and 53.9-inch height, larger than the listed Dometic DM2652 opening.

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12V compressor · 10 cu. ft. class

Norcold Polar N10DCSSR

Tall two-door 12V refrigerator with independent fridge and freezer compartments, electronic controls and a night mode. Useful for a larger Norcold enclosure.

Required cabinet opening (H × W × D)59.88–60.01 in. H × 23.50–23.63 in. W × 24 in. D

Cabinet comparison: The N10DC opening range matches the listed Norcold N81X cabinet range. Dometic DM2852 cabinets may need mounting shims.

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12V compressor · 10 cu. ft.

Dometic DMC4101L — left-hinge

Ten-cubic-foot 12V compressor refrigerator with separate freezer storage, digital controls and left-hand door swing. It can be compared with larger 8-cu.-ft. absorption-fridge cabinets.

Required cabinet opening (H × W × D)59.9 in. H × 24 in. W × 24 in. D

Cabinet comparison: Needs a 24-inch-wide opening, about 5/16 inch more than the published Dometic DM2852 width.

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Check these before ordering

• Measure the empty cabinet at the front and rear; check for trim, screws, floor slope and obstructions.
• Allow for doors, handles, hinges and cabinet doors to open fully—not just the rectangular cutout.
• Plan for a suitable dedicated 12V supply. The existing 12V control wiring for an absorption refrigerator is not automatically sufficient for compressor operation.
• Follow the new model’s ventilation, mounting, levelling and electrical instructions. Have unused LP-gas connections safely disconnected and capped by a qualified technician.