B&B Molders CoolVent RV Ceiling Registers — 94271–94275 Parts Guide

B&B Molders offers several white RV ceiling registers with similar round faces but different opening sizes, collar depths and air-control designs. Before replacing one, remove the old trim carefully and measure the actual ceiling opening and the depth available behind it. A 4¾-inch cutout is not interchangeable with a 5¼-inch cutout just because both grilles look alike.

Compare ceiling opening, outer face and collar

Factory base, cover and grille part numbers

The B&B Molders parts catalog distinguishes the mounting base (B) from the visible cover (C) for the CoolVent families. These factory numbers help identify the correct assembly, but the linked products below are the matching complete aftermarket register listings, not separately priced covers or bases.

How to choose the correct vent

4¾-inch CoolVent family

For models 94271, 94272 and 94273, the manufacturer specifies a 4¾-inch ceiling cutout and a 6¼-inch outside face. Their collar depths differ: 94271 is 1½ inches, 94272 is ¼ inch and 94273 is ½ inch. The first is an adjustable CoolVent; the latter two use the snap-on face design.

5¼-inch grille family

The 94274 and 94275 fit a larger 5¼-inch cutout and have 6½-inch outside faces. Choose 94274 for the no-damper grille; 94275 has a damper to control airflow. The manufacturer lists complete OEM numbers for these rather than separate base and cover numbers.

Photographs and matching registers

94271 — Adjustable CoolVent

For a 4¾ in opening, with 6¼ in outside diameter and 1½ in collar depth.

View 94271 product

94272 — Snap-On CoolVent

For a 4¾ in opening, with 6¼ in outside diameter and ¼ in collar depth.

View 94272 product

94273 — Snap-On CoolVent

For a 4¾ in opening, with 6¼ in outside diameter and ½ in collar depth.

View 94273 product

94274 — Ceiling grille without damper

For a 5¼ in opening, with 6½ in outside diameter.

View 94274 product

94275 — Ceiling grille with damper

For a 5¼ in opening, with 6½ in outside diameter.

View 94275 product

Compare the original installation

1. Measure the ceiling or duct cutout and confirm its shape and available depth.
2. Check how the original register fastens and whether its face hides the screws.
3. Verify whether the system requires an adjustable damper, simple grille or snap-on face.
4. Match the original model, base/cover design and finish before ordering.

Open B&B Molders' official ceiling-vent catalog charts (PDF) in the Vents section for the factory part-number references and photographs.