American made · since 1999

Zip-Ez™ Fasteners,
Lineset Box™ & Star Box™Professional HVAC Installation Products. Made in the USA.

The Lineset Box™ and Star Box™ handle the line set at rough-in. Zip-Ez™ holds the duct insulation on. Here is where each one goes in the house.

  1. 1Lineset Box™Exterior wall termination for the line set, drain and wireView
  2. 2Star Box™Steel mini-split rough-in box, inside the wall behind the headView
  3. 3Zip-Ez™Mechanical fasteners for duct wrap and foam board, one per footView
Sheet A-1: building section showing where J.T. Products parts install, with the products in true side profile and three enlarged details 1 Lineset Box at the exterior wall penetration, flange on the sheathing under flashing tape, siding run to the flange. 2 Star Box in the stud bay behind the mini-split head, open face to the room, wings on studs at 16 inches on center. 3 Zip-Ez fasteners on the duct wrap of the attic supply trunk, one per foot at the lap. 2 1 3 12" O.C. TYP. SECTION A–A Typical mini-split install + attic supply duct. Products drawn in true side profile (CAD). Building not to scale. 1LINESET BOX™Product + CAD side profile Lineset Box, white 3.60" 4.45" 12.16" 2STAR BOX™Product + CAD side profile Star Box, 16 gauge galvanized steel 10.02" 3.38" 3ZIP-EZ™Product + disc profile Zip-Ez insulation fasteners, bag of approximately 250 2-1/8" J.T. PRODUCTS · SHEET A-1Product profiles from the CAD drawings.
J.T. Products · where it goes · hover a part or tap a numberSwipe to explore →Sheet A-1

The lineup

Three products. Three jobs done right.

01 · Exterior wallLineset Box line set rough-in box, white

Lineset Box™

The line set rough-in box. Plumbers have their washer boxes. Electricians have their boxes. This one is for HVAC.

  • Install it when you cut out the house and claim the bay before the siding crew shows up.
  • Line set, condensation drain and low voltage wire terminate in one clean, weathertight point.
  • One molded piece of UL-recognized polypropylene. White or black, same box.
02 · Inside the wallStar Box 16 gauge galvanized steel mini-split rough-in box

Star Box™

The mini-split rough-in box. Goes in the stud bay behind the head unit, before drywall.

  • Folded 16 gauge galvanized steel, one piece. Nothing to assemble, nothing to drop behind the wall.
  • Long-slot mounting wings fit wood or metal studs at 16 in centers, even when framing is off.
  • Four knockout sizes, top and bottom: line set, drain and control wire each get their own hole.
03 · On the ductZip-Ez insulation fasteners, bag of approximately 250

Zip-Ez™

Insulation fasteners. Tape seals the seam. Zip-Ez holds the insulation on.

  • Owens Corning, Johns Manville and Knauf call for mechanical fasteners in their duct insulation instructions.
  • Slip it over a sheet metal screw and drive it with your drill. At least twice as fast as tie wire.
  • Approximately 250 per bag. Patented design, made in the USA.
John Tomaini, inventor and founder of J.T. Products

Made by someone who has done the work

Over 40 years contracting taught me what fails on the job. I invented these products to fix it. My name is on every box. I stand behind it.

John TomainiInventor and founder, J.T. Products LLC

1999Zip-Ez™ fasteners
2008Lineset Box™ joins the line
2025Star Box™ for mini-splits

From the field

What installers say

★★★★★
These are not the cheapest insulation fasteners but they are tough. I have not broken one yet and they work great. They invert when you tighten them, then they are flush with the insulation surface.
Kenneth W. Church · Verified purchase, Zip-Ez™ on Amazon
★★★★★
They are a super great product. Our installation technicians are using them on almost every job and they love them!!!
Holly · Verified purchase, Zip-Ez™ on Amazon
★★★★★
Ordered these for a HVAC company and they were exactly what we needed. The shipping was on time. I would order from JT Products again.
Christena A. · Verified purchase, Zip-Ez™ on Amazon

Reviews quoted from verified Amazon purchases.

Questions on a job?

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