Available finishes

  • Bronze anodized (B)

Part numbers

  • QMQB-J1 B 0327(black)

QBox™ Junction Box
for Comp Shingle Roofs
Item code: QMQB-J1

The QBox™ is a flashed junction box with Quick Mount PV patented Elevated Water Seal Technology™, and provides a waterproof pass-through for conduit from the box enclosure to the attic. QBox comes fully equipped with fasteners to install to the roof deck, fittings for through-the-deck conduit attachments to transition or combine up to two (2) strings of conductors.

  • 12"x12" anodized aluminum flashing with patented Elevated Water Seal Technology®
  • 5.5" x 5.75" enclosure is made of non-conductive material, eliminating need to ground box or its door
  • Waterproof pass-through for conduit from QBox enclosure to the attic
  • Made from durable and weather resistant polycarbonate
  • Drill starter around enclosure ensures perfect hole location for conduit attachment
  • Can be used to transition a single string, two parallel strings, or two combined strings
  • 5-year limited product warranty
  • Product Patent Information

Product Resources

Installation Guide (PDF 1.5M)
CAD drawing
DWG (210K) • PDF (97K)
5-year Warranty (PDF 615K)

WARNING: Quick Mount PV products are NOT designed for and should NOT be used to anchor fall protection equipment.

Product Specifications

Each mount kit (12 per box) includes:

  • Cast aluminum mounting block (2-1/4" L x 1-1/4" W x 1-1/4" H) bonded with .05" thick, 12" x 12" aluminum flashing
  • Hanger bolt, 5/16" x 6" (1-1/4" machine, 1-3/4" shank, 3" lag)
  • Stainless steel and EPDM rubber sealing washer, 3/4" x 5/16"
  • Two 5/16" hex nuts
  • EPDM sealing washer with 60 Durometer hardness
  • Stainless steel flat washer, 1" x 5/16"

Flashing size 12" x 12"
Pullout/shear 2554 lbs. average ultimate pullout (Douglas fir); 2203 lbs. average ultimate shear
Tools needed for installation
  • Tape measure
  • Roofers bar/shingle ripper
  • Chalk line
  • Stud finder
  • Caulking gun
  • Appropriate sealant
  • Drill with 1/4" bit
  • Drill or impact gun with deep 1/2" socket
Applicable roof types Standard and high-definition composition and wood shingle roofs with 5" to 5/12" courses
Available finishes
  • Aluminum mill
  • Clear anodized
  • Bronze anodized
Compatible racks

Product Resources

Installing the Classic Comp Mount

Installation Guide (PDF 765K)
Engineering report (PDF 1.6M)
CAD drawing
DWG (726K) • PDF (63K)
"When I'm punching dozens of holes to mount a solar array, I need to be certain there are no points of failure. Only Quick Mount gives me that assurance."
Tony Diaz, Century Roof & Solar
"I learned the hard way at a previous employer. Now I trust every job I can to Quick Mount PV. "
Justin McComas, Baker Electric Solar
"With our severe Rocky Mountain winters, only Quick Mount PV delivers the installation speed and absolute confidence we need."
Will Serene, Independent Power Systems
"We all agreed that only Quick Mount PV could give us the confidence we needed in mounting a big job like this."
Andy Tyson, Creative Energies
"Quick Mounts are better quality, more cost effective, and easier to install than any brand we've used."
Darren Malvin, American Solar
"I've been a roofer for 30 years and I know quality when I see it. Quick Mounts are the real deal."
Mark Fambrini, Mark Fambrini Renovations
"Thanks to Quick Mount PV, the alliance between roofing and solar is stronger than ever."
Chip Upshaw, Fidelity Roof
"I've tried a lot of attachment options, but here in the rainy Pacific Northwest, there is only one product I can trust on my customers' homes. Once we started using Quick Mounts we never stopped."
Sarah Freel, Synchro Solar

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