Fan and Fixture Mounting Box for Cathedral Ceilings – 14.5 cu in – FB900

Meta description:
Fan and fixture mounting box for new construction. Supports 70 lb fans and 200 lb fixtures. Designed for cathedral ceilings 80° or greater with an 8 in square mounting surface.

What is this product?
The FB900 is a fan and fixture mounting box designed for new construction applications on cathedral or steeply sloped ceilings. It supports ceiling fans up to 70 lb and light fixtures up to 200 lb, making it suitable for larger, heavier installations. The 8 in square mounting surface accommodates fans with oversized canopies, while the 14.5 cubic inch box provides ample wiring space. A paintable textured finish allows the box to blend seamlessly into finished ceilings.

TL;DR – Who this is for

- Electricians installing ceiling fans or fixtures on steep or cathedral ceilings
- New construction residential projects with vaulted ceilings
- Contractors handling heavier fans or large decorative fixtures
- Installations requiring a larger mounting surface for oversized canopies

Institutional Fit

- Residential new construction and renovations
- Homes with cathedral or vaulted ceilings
- Light commercial spaces with angled ceilings
- Projects requiring UL and CSA listed fan-rated boxes

Key Benefits

- Designed for cathedral ceilings up to 80 degrees or greater
- Supports ceiling fans up to 70 lb
- Supports light fixtures up to 200 lb
- 8 in square mounting surface for large fan canopies
- 14.5 cu in internal capacity for wiring
- Paintable textured finish for clean final appearance
- Non-metallic construction resists corrosion

Technical Specifications

Included Components

- Mounting block with built-in electrical box
- NM94 cable connector
- (2) #12 x 3 in screws
- (2) #10 x 1 in screws

Regulatory and Installation Notes

- Intended for new construction only
- Install per NEC and local electrical codes
- Confirm fan and fixture weights before installation
- Suitable for steeply sloped and cathedral ceiling applications

Durability and Lifecycle

- Non-metallic construction resists corrosion and cracking
- Textured paintable surface supports long-term aesthetic integration
- Designed for long service life in residential ceiling installations

Procurement Notes

- Select when ceiling slope exceeds standard fan box limits
- Ideal for large ceiling fans with wide canopies
- Confirm ceiling angle and structural framing prior to rough-in

FAQ

What ceiling angles does this support?
It is designed for cathedral ceilings up to 80 degrees or greater.

How heavy of a fan can it support?
Up to 70 lb for ceiling fans and up to 200 lb for light fixtures.

Is this suitable for retrofit installs?
No. This model is intended for new construction applications only.

Can it be painted?
Yes. The textured finish is paintable to match ceiling surfaces.

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