A genuine OEM bottom-outside vent for Thetford absorption (“3-way”) refrigerators. Designed to ensure proper airflow and cooling efficiency from the lower section of your fridge, especially in caravans or motorhomes. The white finish offers a clean look that suits many RV exteriors.

For proper performance, Thetford absorption refrigerators require correctly sized vents on the outside of the vehicle. This vent is designed for the lower / bottom position and works in conjunction with an upper vent to ensure optimal cooling and safe operation.

OEM Part Number: 631246111 (also referenced as 700-03732)

Kit Includes:

• 1 × bottom vent frame

• Slide locking clip to secure vent (side-to-side release)

• Mounting screws

Specifications

Overall Dimensions (H × W): 186 mm × 483 mm

Cut-out Dimensions (H × W): 156 mm × 451 mm

Colour: White

Net Weight: approx. 0.5 kg

Position: Bottom / lower vent

Fits hole-sizing of: 451 mm wide × 156 mm high

Compatibility:

• Suitable for Thetford absorption refrigerators up to 100 litres

• Designed for N3, N4, and N5 series absorption fridges only

• Used as the bottom (lower) outside vent in these fridge installations

Frequently Asked Questions

Q: What does this vent do?
It provides the lower airflow inlet (or exhaust depending on design) needed by absorption fridges. Proper ventilation from top and bottom vents ensures safe combustion (if using flame) and efficient cooling in hot conditions.

Q: Will this suit my fridge?
Check your fridge model: if it’s an N3, N4, or N5 series Thetford absorption fridge up to 100 litres, this vent will suit.

Also measure your current vent hole: it should match or be close to the cut-out dimensions listed.

Q: Does it come with the upper vent?
No, this is the bottom / lower vent only.

Q: What happens if I don’t have a bottom vent?
Without correct bottom ventilation, absorption fridges may overheat, work inefficiently, or be unsafe. Proper airflow (top + bottom) is crucial.