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 Non-Penetrating Roof Mount (4 Trays) with 4.5 inch O.D. King Post


This is a commercial, heavy-duty, non-penetrating mount for ground and roof top site installations.

Designed for mounting our 10-ft solid or 10-ft mesh consumer/commercial antennas. It includes 4 tray modules with pads, 4.5 inch O.D. and 6-ft tall King Post.

The King Post is additionally supported by 4 steel struts for extra strength.

Heavy gauge steel fabrication, chip and rust resistant, gloss-black finish.

Note: This is a commercial grade NPRM intended for critical installations. For consumer antennas, please purchase the regular-duty NPRM with Pyramid Base Mast.

Note: Use 16" x 8" x 8" concrete blocks (36 lbs each) or 24" x 24" x 1.5" stones (75 lbs each) as ballast to weigh down trays.

Note: Minimum 1600 lbs ballast weight recommended for our 10-ft Commercial Mesh Antenna. Concrete blocks or stones must be stacked on two levels. Increase ballast weight by 50% for solid antennas of the same size.

Note: To minimize roof load, purchase additional modular trays and spread the load.

Note: Use included washers and nuts/bolts at base of King Post to make it plumb.

Note: Takes up approximately one parking lot space if this is a ground installation.

Note: Antennas, concrete blocks and stones are NOT included.


  • Economical solution for mounting antennas on roof
  • Expandable using modular trays (T or I expansion)
  • 4.5 inch O.D. King Post
  • 6-ft Tall King Post
  • 4 Steel Support Struts
  • Heavy gauge steel fabrication
  • Tested for survivability


  • Four Modular Trays
  • King Post
  • 4 Steel Struts
  • One inch Styrofoam Pads
  • Nuts and Bolts
  • Bubble Level

Price: $1799.00 USD

 Add-on Options

1. Inclinometer

 Digital Inclinometer
    [add $119.00 USD]


(ETA: Unknown due to Supply Chain Disruption)


Modular Tray 
Material Steel
Dimensions 4ft x 2ft (121.9cm x 60.1cm)
Thickness 0.24 inches (0.61cm)
Weight 100 lbs
Finish Gloss-black
Steel Post 
Material Steel
Height 6ft (182.9cm)
Outside Diameter 4.5 inches (11.4cm)
Thickness 0.24 inches (0.61cm)
Weight 100 lbs
Finish Gloss-black
Square Base 
Material Steel
Width 24 inches (61.0cm)
Height 24 inches (61.0cm)
Weight 60 lbs
Finish Gloss-black
Anchor Bolts 
Modular Tray bolt size 5/8 inches (1.59cm)
Modular Tray bolt size 3/8 inches (0.95cm)
Square Base bolt size 5/8 inches (1.59cm)
Steel Strut bolt size 5/16 inches (0.79cm)
Shipping Details 
Box 1 50"x6"x6" (96 lbs)
Box 2 50"x6"x6" (96 lbs)
Box 3 24"x20"x4" (88 lbs)
Box 4 24"x20"x4" (88 lbs)
Box 5 24"x6"x6" (50 lbs)
Box 6 72"x24"x24" (100 lbs)
Box 7 48"x24"x8" (20 lbs)

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