Loading... Please wait...
  • Galvanized steel box rail
  • Black finish
  • Image 3
  • Image 4
  • Box Rail kit included items
  • Mounting Options
  • Galvanized steel box rail
  • Black Powder-coated finish
  • Black Powder-coated finish
  • Black Powder-coated finish
  • Box Rail installed on barn door (painted onsite)

Box Rail Sliding Hardware

Side-Mount Galv. Out Of Stock, Call for Availability in colors.

Product Description

Box rail sliding hardware is suitable for both exterior and interior use. For an industrial or barn door look, hidden ball bearing wheels glide inside a galvanized steel box rail. Rated for max. 440 lb doors, this heavy duty hardware will look great with your rustic or modern doors. Available in galvanized steel or a variety of powder-coated finishes including black, oil-rubbed bronze, and sienna rust.

Quietest Box Rail Trolleys on the Market


Minimum door thickness: 1-3/8", maximum door thickness: 2-1/4". The trolley mounting plate is 1-1/4" wide. In certain cases (such as when the door is thin), the mounting plate should be surface mounted, and not mortised into the door. 

Note: Galvanized steel is an industrial 'mill finish'. All other finishes are high-strength powdercoat.


Lead time: Side-Mount in some colors out of stock, Call for Availability.

Determine Box Rail Kit Length

Single Door: Multiply your single door width by two for optimum track length. For a 3ft door, you would typically need a 6ft rail kit. Naturally, you can order a longer track or shorter track, if your situation requires it.

Double Doors: For biparting doors, choose a kit length for the total track length needed, then change "Quantity of doors on track" to 2 to add hardware for an additional door.

Note: This box rail kit is a single track only.

Other Options:

Lag bolts are used to attach the track to the wall. Choose our Lag Bolts for a matching zinc, black, or oil rubbed bronze finish.

Custom tracks

Call us for custom track lengths and applications!

Actual Rail Lengths:

Box Rail rails are sent longer the foot length specified. Use this chart to determine the exact length of the rail you will receive:

Actual Rail Lengths

Kit Size Actual Rail Lengths(inches) Total Actual Length(inches)
5' 1 rail @ 71" 71"
6' 1 rail @ 82" 82"
7' 1 rail @ 94" 94"
8' 1 rail @ 102" 102"
10' 2 rails @ 71" each 142"
12' 2 rails @ 82" each 164"
14' 2 rails @ 94" each 188"
16' 2 rails @ 102" each 204"
20' 3 rails @ 82" each 246"
22' 3 rails @ 94" each 282"
24' 3 rails @ 102" each 306"
26' 4 rails @ 82" each 328"
30' 4 rails @ 94" each 376"
32' 4 rails @ 98" each 392"
34' 4 rails @ 102" each 408"
36' 4 rails @ 108" each 432"
38' 5 rails @ 94" each 470"
40' 6 rails @ 82" each 492"
42' 5 rails @ 102" each 510"
44' 5 rails @ 106" each 424"
46' 6 rails @ 94" each 564"
50' 6 rails @ 102" each 612"

Technical Details

Weight Limits**

  Steel Wheels Hush Wheels™  Wood Wheels™ 
Aero /Prop FT Kits 200 lb. door 200 lb. door 80 lb. door
FT & SS Kits
400 lb. door 400 lb. door 80 lb. door
Horseshoe FT Kit 550 lb. door 550 lb. door 110 lb. door
Industrial Duty FT Kit 
(Call us!)
800 lb. door N/A N/A 
Box Rail Kit N/A 440 lb. door N/A
Stainless Box Rail Kit N/A 400 lb. door N/A
Swiss/Hex Bar Kit N/A 300 lb. door N/A

**Rating per pair of hangers


Download technical info

NOTE: Doors not included in kit. For do-it-yourself sliding doors, see Real Barn Door Kits. For heavy duty, high quality doors, visit Real Carriage Door Co.

Product Reviews

Write your own product review

  1. Really great hardware!

    Posted by Randall Butler on 29th Apr 2014

    Excellent quality! I had originally ordered from a different manufacturer and was VERY disappointed, to say the least. After switching to Real Sliding Hardware, there was really no comparison. I will absolutely use RSH in the future and would recommend them to anyone in the market for this application.

  2. great quality

    Posted by jon moore on 31st Mar 2014

    Excellent product. The only thing that would help would be to offer shims for the rail on the wall to align the door to the wall depending on the base thickness.


Real Sliding Hardware is designed and manufactured by Real Carriage Door Company. We are committed to excellence in creating high quality products for our customers worldwide.

Made well in the USA, our original door and hardware designs are visually stunning and structurally robust. We strive to exceed your expectations by combining personalized customer service with the highest quality products and prompt order fulfillment.

We invite you to Build Real.

Recent Updates


Connect with us:
Remodeling and Home Design