At a Glance

> Check the anchor: Match this backing plate to the recessed D-ring anchor pattern before drilling.
> Check the floor: Do not install over rotted, cracked, thin, or unsupported flooring.
> Check the hardware: Mounting hardware is not included; use appropriate 3/8" hardware for the installation.
> Plate Match: Compare the existing plate or anchor opening to the 6-1/2" square BP05 dimensions.
> Hardware Match: This plate uses 3/8" bolt holes; bolts, washers, and nuts are not included.
Brand: Brophy
SKU: BP05

Before You Order

Match the part number, measurements and connection points that apply to your trailer.

Attachment	Match the track, anchor or mounting style.
Dimensions	Verify fitting and strap dimensions.
Rating	Check the complete securement-system rating.

Product Details

Trailer Tie-Down Hardware / D-Ring Backing Plate

Brophy Backing Plate for RR05 - 4 Bolt - Recessed D-Ring

Zinc-plated steel backing plate used to reinforce Brophy RR05 recessed D-ring tie-down anchor installations. Designed to bolt beneath the trailer floor to help support the anchor mounting area.

Part Number: BP05 6-1/2" x 6-1/2" x 1/8" Qty: 1 Backing Plate

Key Measurements & Specs

Specification	Detail
Part Number / SKU	BP05
Brand	Brophy
Product Type	D-ring backing plate / back support plate
Dimensions	6-1/2" wide x 6-1/2" tall x 1/8" thick
Center Hole Diameter	3-5/16"
Bolt Hole Diameter	3/8"
Material / Finish	Zinc-plated steel
Quantity Included	1 backing plate
Mounting Hardware	Not included

Fitment / Application

Category	Details
System	Trailer recessed D-ring tie-down anchor installation
Primary Fit	Designed for Brophy RR05 recessed D-ring tie-down anchors
Additional Brophy Reference	Listed by Brophy as backing plate for RR05 and RRS5 applications
Fitment Method	Verify plate size, center opening, bolt hole diameter, and anchor mounting pattern before ordering
Important Note	This listing is for the backing plate only. D-ring anchor, bolts, nuts, and washers are not included.

Top Features

Feature	Buyer Benefit
Under-Floor Reinforcement	Helps support the trailer floor area beneath a recessed D-ring anchor
Zinc-Plated Steel	Provides durable support with corrosion-resistant plating
Bolt-On Installation	Installs beneath the trailer floor using compatible 3/8" mounting hardware
RR05 Application	Made for use with Brophy RR05 recessed D-ring tie-down anchor installations

Overview

The Brophy BP05 is a zinc-plated steel backing plate used under the trailer floor when installing compatible recessed D-ring tie-down anchors. It reinforces the mounting area beneath Brophy RR05-style installations and gives the anchor a broader support surface than the floor material alone.

R&P Service Insight

Backing plates matter when tie-down anchors are mounted through wood, steel, or composite trailer flooring. The plate helps spread load across the mounting area, but the final installation strength still depends on the anchor, hardware, trailer floor condition, and mounting method.

Check the anchor: Match this backing plate to the recessed D-ring anchor pattern before drilling.
Check the floor: Do not install over rotted, cracked, thin, or unsupported flooring.
Check the hardware: Mounting hardware is not included; use appropriate 3/8" hardware for the installation.

R&P Knowledge Hub

Compatibility: Designed for Brophy RR05 recessed D-ring tie-down anchor installations. Brophy also references BP05 as a backing plate for RR05 and RRS5 applications.

Trailer / System Fit: Used on trailers requiring a reinforced 4-bolt recessed D-ring mounting location where measurements and bolt pattern match.

Installation Notes: The BP05 installs beneath the trailer floor. Confirm the 6-1/2" square plate size, 3-5/16" center opening, and 3/8" bolt holes before ordering.

Performance Insight: A backing plate helps distribute mounting force under the anchor area. Do not treat the backing plate alone as the complete tie-down system or as a capacity rating.

Brand & Fitment Note

Selling Brand: Brophy

Application Reference: RR05 and RRS5 references are compatibility/application references for matching Brophy recessed tie-down anchor installations.

What This Means: This listing is for one Brophy BP05 backing plate only. It is not a complete D-ring kit unless a separate kit is specifically listed.

Before Ordering: Verify measurements, bolt pattern, trailer floor condition, anchor model, and hardware requirements before installation.

R&P Repair Insight

When replacing or adding trailer tie-down points, confirm the complete mounting stack before ordering parts. The backing plate, D-ring anchor, trailer floor, and bolts all work together as a system.

Plate Match: Compare the existing plate or anchor opening to the 6-1/2" square BP05 dimensions.
Hardware Match: This plate uses 3/8" bolt holes; bolts, washers, and nuts are not included.
Load Path: Tie-down strength depends on the full installation, not the backing plate by itself.

Features

Reinforces Recessed D-Ring Mounts

Installs beneath the trailer floor to support the area under compatible Brophy recessed D-ring anchors.

Zinc-Plated Steel Construction

Durable steel plate with zinc plating for corrosion resistance in trailer cargo and utility applications.

Verified BP05 Dimensions

Measures 6-1/2" x 6-1/2" x 1/8" thick with a 3-5/16" center hole and 3/8" bolt holes.

Backing Plate Only

Listing includes one BP05 backing plate. D-ring anchor and mounting hardware are sold separately unless otherwise stated.

Included Components

Quantity	Item
1	Brophy BP05 zinc-plated steel backing plate
Not Included	RR05 recessed D-ring anchor
Not Included	Mounting bolts, nuts, washers, or installation hardware

Brophy BP05 zinc plated steel backing plate for RR05 recessed D-ring tie-down anchor

Important Fitment Note: Verify all measurements, anchor model, bolt hole spacing, trailer floor condition, and hardware requirements before installation. This listing is for one backing plate only. Tie-down anchor capacity depends on the complete installed system, not the backing plate alone.

Shop Matching Tie-Down Hardware

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Brophy Backing Plate for RR05 - 4 Bolt - Recessed D-Ring (BP05)