Highline Products
Fiberglass Products




Introducing the New Millennium Line— Transformer Pads for the 21ST Century

MacLean Highline is proud to introduce a new line of 15", 24" and 32" transformer pads. Our innovative, patented, design results in a product that is extremely strong and durable, yet lightweight. These products are manufactured at our ISO9000 certified plant using compression molding tools and a specially formulated SMC (sheet molding compound). This process assures consistent product quality as well as other benefits such as:

  • UV protection throughout the entire product, versus surface only protection
  • of a spray up fiberglass box
  • Superior side wall strength which helps reduce sidewall deflection
  • Up to a 40% weight reduction from traditional box pads
  • Easy installation
  • Fire retardant
  • Rapid production - which yields shorter lead-times

Through our innovative manufacturing technique, Highline Products can now offer its compression molded product line with an expanded number of top openings including openings customized to your needs. Thus, Highline compression molded products are now available to meet a wider range of customer needs.

Durability Over the Long Haul

Northeast Underground Guidelines (NEUG) call for box pads with a minimum safety factor of 2x for the normal life span of a transformer—30 years. Recent testing of 30-year old Highline box pads, returned from the field, revealed they still carried loads up to 7,000 pounds while complying with deflection criteria of NEUG. The New Millennium Line is an extension of this history of quality, while pricing is in line with the current needs of our customers.

Install your box pads with confidence knowing that you are using the best in the industry!

You can download drawings of individual products—in the format of your preference—by clicking the appropriate icons in the tables below.

PDF Drawing = Adobe PDF (download free viewer)
PDF Drawing = SolidWorks EXE (download free viewer)


15" Transformer Box Pads - HL374315 Series
Catalog Number Drawing Top Opening
HL374315-1221 PDF Drawing  PDF Drawing 12 x 21
HL374315-1225   12 x 25
HL374315-1424   14 x 24
HL374315-2020 PDF Drawing  PDF Drawing 20 x 20
HL374315-2224 PDF Drawing  PDF Drawing 22 x 24
HL374315-2426   24 x 26
HL374315-2626 PDF Drawing  PDF Drawing 26 x 26
HL374315-2632 PDF Drawing  PDF Drawing 26 x 32
Length Width Height
37.5" 43" 15"

24" Transformer Box Pads - HL374324 Series
Catalog Number Drawing Top Opening
HL374324-1221 PDF Drawing  PDF Drawing 12 x 21
HL374324-1225   12 x 25
HL374324-1424   14 x 24
HL374324-2020 PDF Drawing  PDF Drawing 20 x 20
HL374324-2224 PDF Drawing  PDF Drawing 22 x 24
HL374324-2426   24 x 26
HL374324-2626 PDF Drawing  PDF Drawing 26 x 26
HL374324-2632 PDF Drawing  PDF Drawing 26 x 32
Length Width Height
37.5" 43" 15"

32" Transformer Box Pads - HL374332 Series
Catalog Number Drawing Top Opening
HL374332-1221 PDF Drawing  PDF Drawing 12 x 21
HL374332-1225   12 x 25
HL374332-1424   14 x 24
HL374332-2020 PDF Drawing  PDF Drawing 20 x 20
HL374332-2224 PDF Drawing  PDF Drawing 22 x 24
HL374332-2426   24 x 26
HL374332-2626 PDF Drawing  PDF Drawing 26 x 26
HL374332-2632 PDF Drawing  PDF Drawing 26 x 32
Length Width Height
37.5" 43" 15"

 

42" Transformer Box Pads - HL424204 Series
Insert bolt down option
Catalog Number Drawing Top Opening
HL424204-1220 PDF Drawing       12 x 20
HL424204-1224 PDF Drawing       12 x 24
HL424204-1227 PDF Drawing       12 x 27
HL424204-1626 PDF Drawing       16 x 26
Length Width Height
42" 42" 4"

 

42" Transformer Box Pads - HL424204 Series
Unistrut bolt down option
Catalog Number Drawing Top Opening
HL424204-1220u PDF Drawing       12 x 20
HL424204-1224u PDF Drawing       12 x 24
HL424204-1227u PDF Drawing       12 x 27
HL424204-1626u PDF Drawing       16 x 26
Length Width Height
42" 42" 4"

 

52" Transformer Box Pads - HL425204 Series
Insert bolt down option
Catalog Number Drawing Top Opening
HL425204-1220 PDF Drawing       12 x 20
HL425204-1224 PDF Drawing       12 x 24
HL425204-1227 PDF Drawing       12 x 27
HL425204-1626 PDF Drawing       16 x 26
Length Width Height
42" 52" 4"

 

52" Transformer Box Pads - HL425204 Series
Unistrut bolt down option
Catalog Number Drawing Top Opening
HL425204-1220u PDF Drawing       12 x 20
HL425204-1224u PDF Drawing       12 x 24
HL425204-1227u PDF Drawing       12 x 27
HL425204-1626u PDF Drawing       16 x 26
Length Width Height
42" 52" 4"

 

All nuts are encapsulated. To specify Transformer Tie Downs add a "T" to the end of the part number.

Optional Covers
HL-45-2EF Box Pad Cover, Electric Logo, Penta Hardware
HL-45-2EP Box Pad Cover, Electric Logo, Fargo Stud
HL-45-2TF Box Pad Cover, Telephone Logo, Fargo Stud
HL-45-2TS Box Pad Cover, Telephone Logo, Screw Hardware

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