Product Description
Mactac B•free® JT5798MBF v2 Dusted – 3.1 Mil Translucent Matte Dusted Window Film – Bubble-Free Dry-Apply Air-Egress Adhesive, 54" × 5–7 Year Durability
Micro-Structured Air-Egress Adhesive | No Application Fluid | Soft Dusted-Glass Look | Print It or Use It Blank for Privacy
Mactac B•free® JT5798MBF v2 Dusted delivers a soft, even dusted-glass finish — a lighter, more diffuse alternative to a hard frosted etch, closer to a fine matte haze than a deep sandblast. It's a 3.1-mil translucent matte dusted polymeric PVC film with a micro-structured, permanent, clear acrylic air-egress adhesive built for dry application: air escapes through channels in the adhesive as you squeegee, so it goes down bubble-free and wrinkle-free with no wet-application fluid and no cleanup. Mactac's B•free line is the market's first dry-apply large-scale window graphic, and it cuts application time roughly in half.
Print it on solvent, eco-solvent, latex, or UV for dusted window graphics, or install it blank as non-printed privacy and light-diffusing window shading. It suits indoor and outdoor window graphics and internally illuminated light box faces.
Applications
- Privacy glass — conference rooms, offices, medical and dental partitions, entry sidelights
- Decorative dusted graphics — logos, patterns, and manifestation banding on glass doors and walls
- Storefront and retail window graphics with a soft dusted-glass aesthetic
- Non-printed window shading — the film blank, for privacy or light diffusion
- Internally illuminated signs and light boxes
- Safety-glass manifestation — visibility marking on full-height glass (verify local code requirements)
Dark areas in a printed window graphic absorb heat. When sun hits the graphic, temperature differences across the glass create thermal stress that can crack the pane — and Mactac explicitly accepts no liability for glass breakage from this cause. Risk rises with dark ink coverage, glass size, thickness, cut quality, edge condition, tinting, and frame design.
On a west- or south-facing storefront in Phoenix, a dark-heavy graphic on a large annealed pane is a genuine hazard. Keep printed designs light where sun exposure is high, be cautious on large or tinted glass, and when in doubt, talk to us before the job goes out.
The air-egress adhesive has channels that let air escape. Use application fluid and the liquid gets trapped in those channels, which is exactly the failure the technology is meant to prevent. Do not wet-apply this film. If the job calls for a wet application, Mactac recommends the Glass Décor 700 series instead — ask us and we'll point you the right way.
Physical Properties
| Property | Typical Value |
|---|---|
| Film Type | Translucent matte dusted polymeric PVC |
| Thickness (face only) | 2.95 mil (75 µ) |
| Thickness (film plus adhesive) | 4.14 mil (105 µ) |
| Adhesive | Micro-structured, repositionable, permanent, clear acrylic — air egress |
| Peel Adhesion | 3.1–3.7 lb/in (12–18 N/25mm), 180° on stainless steel, 24 hr (FTM-1) |
| Quick Tack | 4.4–5.6 lb/in² (20–26 N/25mm) on stainless steel (FTM-9) |
| Release Liner | 91# polycoated, layflat |
| Dimensional Stability | Max 0.2% at 48 hr / 158°F (FTM-14) |
| Minimum Application Temperature | 50°F (+10°C) |
| End Use Temperature Range | -40°F to 194°F (-40°C to 90°C) |
| Surface Burning | Meets ANSI, NFPA, and IFC Class A — flame spread 5, smoke density 25, per ASTM E84-01 / ANSI-NFPA 255 / IFC 8-1 |
| Outdoor Durability | 5 to 7 years unprinted |
| Shelf Life | 2 years from date of manufacture at 60–77°F and 50% RH in original package |
| Maximum Ink Saturation | 270% |
| Width | 54" |
| Recommended Overlaminate | ColorGard® LUV (where added protection is needed) |
Values are typical and are not necessarily for use in specification. Mactac's window product guide lists durability as 5 years; the JT5798MBF v2 datasheet lists 5–7 years. Confirm with us for a specific job.
Easy Removal
Although designed as a permanent glass application, the film removes easily with little to no adhesive residue. Lift a corner and peel slowly but firmly at a 90° angle. On larger graphics, score the film into 5"–6" wide strips the height of the window and peel one strip at a time.
The B•free® Window Family
| JT5796MBF v2 Frosted | JT5798MBF v2 Dusted | JT5999MBF v2 Clear | |
|---|---|---|---|
| Finish | Matte frosted translucent | Matte dusted translucent | Gloss clear |
| Look | Etched / sandblasted glass | Softer, evenly dusted etch | Transparent — reverse-print to read through glass |
| Thickness | 3.1 mil | 3.1 mil | 3.1 mil |
| Liner | 80# LFP | 91# LFP | — |
| Adhesive | Air-egress permanent clear acrylic — dry application | ||
| Width / Durability | 54" / 5–7 yr | 54" / 5–7 yr | 54" / 5 yr |
Do not mix JT5798MBF v2 with the original JT5798MBF in the same job — the finishes are not an exact match.
Printing Notes
Ink Saturation & Drying
Print in a conditioned pressroom at approximately 73°F and 50% RH; maximum ink saturation is 270%. Solvent, eco-solvent, and mild-solvent prints need 24–48 hours of open-air drying — ink does not dry in a rolled-up print, and it must be fully dry before lamination.
Transport
Roll finished graphics image out at a minimum 6" core diameter. Unlaminated prints must be completely dry and bagged. Avoid extreme temperature and humidity swings in transit and storage.
Installation — Dry, With a Soft Squeegee
Cleaning the Finished Film
Use a soft, lint-free cloth and off-the-shelf glass cleaner (Windex, Glass Plus). Spray the cleaner onto the cloth, not the graphic, wipe with a damp (not saturated) cloth, and dry immediately. If the edges aren't sealed, keep cleaner away from them — over time it causes edge lifting.
Frosted or Dusted? Get both in front of the customer.
The finish is the whole decision on this product, and it's a visual one. Ask us about samples of the full B•free family — Frosted, Dusted, and Clear — and about ColorGard® LUV where the graphic needs extra protection. KG Supplies stocks Mactac in Phoenix with overnight delivery to Arizona, Nevada, New Mexico, and Colorado, plus nationwide UPS shipping. Call (602) 272-8655 or email Sales@kgsupplies.com.
