Gruv 4 Matte White Permanent Bubble Free 54″ x 150′

Mactac IMAGin B-free GRUV GV428P Matte White Vinyl

Produce professional indoor and outdoor graphics with Mactac IMAGin B-free GRUV GV428P. This 3.2-mil matte white printable vinyl combines a soft calendered PVC face film with permanent opaque adhesive and bubble-free air-egress technology.

The matte surface reduces unwanted glare and provides a clean foundation for promotional graphics, signs, displays, wall murals, decals, and general-purpose advertising. Its opaque adhesive helps block the color or appearance of the application surface, supporting more consistent graphic presentation.

Air-egress channels help trapped air escape during dry installation. This allows installers to apply larger graphics more efficiently while reducing visible bubbles and minimizing unnecessary repositioning.

GV428P is designed for indoor and outdoor medium-term applications on flat or simply curved surfaces. Mactac rates the unprinted film for up to four years of outdoor durability under appropriate conditions.

Key Features

• 3.2-mil soft calendered PVC film
• Matte white printable surface
• Permanent acrylic pressure-sensitive adhesive
• Opaque adhesive helps reduce surface show-through
• Air-egress technology supports bubble-free installation
• Designed for dry application
• Suitable for flat and simply curved surfaces
• Up to four years of outdoor durability for unprinted film
• Compatible with latex inkjet printing
• Compatible with solvent and eco-solvent inkjet printing
• Compatible with UV inkjet printing
• Suitable for indoor wall mural applications
• 54-inch width supports common wide-format production workflows
• 150-foot roll provides approximately 675 square feet of material

Why Choose Mactac B-free GRUV GV428P?

Easier Bubble-Free Installation

The air-egress adhesive system allows trapped air to move through channels in the adhesive during installation. This helps installers achieve a smoother finished graphic with fewer bubbles.

Permanent Opaque Adhesive

The permanent adhesive provides dependable adhesion for medium-term applications. Its opaque construction helps conceal surface colors, markings, and visual inconsistencies beneath the graphic.

Low-Glare Matte Finish

The matte white face film reduces reflections from indoor lighting and sunlight. This makes printed text and graphics easier to view in retail, office, educational, event, and promotional environments.

Broad Printer Compatibility

GV428P works with common wide-format production technologies, including latex, solvent, eco-solvent, and UV inkjet printers.

Indoor and Outdoor Versatility

Use GV428P for general-purpose graphics installed indoors or outdoors on properly prepared flat and simply curved surfaces.

Four-Year Outdoor Durability

The unprinted film offers outdoor durability of up to four years. Printed graphic life depends on the ink system, environmental exposure, application surface, installation, and use of a compatible overlaminate.

Recommended Applications

Mactac GV428P is well suited for:

• Indoor advertising graphics
• Outdoor promotional graphics
• Retail graphics
• Point-of-purchase displays
• Indoor wall murals
• Exhibition graphics
• Event graphics
• Promotional signage
• Window graphics applied to suitable surfaces
• General-purpose decals
• Equipment identification graphics
• Flat-panel signs
• Display graphics
• Temporary branding
• Medium-term advertising
• Graphics installed on simple curves

Always test the complete printed and laminated graphic on the intended surface before full production.

Important Application Limitations

Mactac GV428P is not recommended for:

• Full or partial vehicle wraps
• Deep channels or complex curves
• Highly contoured surfaces
• Cut lettering applications
• Wet application methods
• Rubber surfaces
• Many plastic surfaces
• Oily or contaminated surfaces
• Unpainted wood
• Aged or chalking paint
• Improperly cured paint
• Corroded or oxidized metals
• Surfaces with poor paint adhesion
• Application over graphics that must remain undamaged

Use Mactac GV729 or another conformable cast vinyl when the application requires a vehicle wrap material or installation over complex contours. GV428P is a calendered general-purpose media intended for flat and simply curved surfaces.

Indoor Wall Mural Applications

GV428P can support bubble-free installation of indoor wall murals. However, paints, primers, wall textures, cleaning products, sealants, environmental conditions, and surface preparation can significantly affect adhesion.

Test the material on the actual painted wall before printing or installing the complete project. Confirm both initial adhesion and removal performance when future graphic removal is important.

Mactac does not make universal adhesion or removal claims for painted wall surfaces because wall coatings and conditions vary widely.

Print Compatibility

Mactac GV428P is suitable for printing with:

• HP Latex printers
• Solvent inkjet printers
• Eco-solvent inkjet printers
• UV inkjet printers

Use the correct ICC profile, heater settings, curing settings, ink limits, and RIP configuration for the printer and ink system. Print quality and finished performance can vary according to the printer, inks, software, production environment, and color-management workflow.

The current Mactac listing identifies latex, solvent, eco-solvent, UV, UV inkjet, and screen-printing compatibility.

Printing and Production Recommendations

Condition the Print Environment

Mactac recommends printing in a conditioned production environment near 73°F and 50 percent relative humidity.

Control Ink Saturation

The performance guide identifies a maximum allowable ink saturation of 270 percent. Adjust ink limits and color profiles to suit the printer, ink technology, and image.

Allow Solvent Prints to Dry

Solvent and eco-solvent prints must dry thoroughly before cutting, laminating, or installation. Mactac recommends leaving solvent-printed graphics open to the air for at least 24 hours rather than immediately rolling them into a tube.

Residual solvents can negatively affect the adhesive’s air-egress properties, adhesion, and finished graphic performance.

Test Before Production

Test the complete combination of media, ink, laminate, surface, and installation method before commercial production.

Compatible Overlaminates

Mactac recommends compatible PERMACOLOR overlaminating films when the finished graphic requires additional protection from:

• Abrasion and scratching
• Cleaning
• Smoke and fumes
• Corrosive liquids
• Polluted environments
• UV exposure
• Handling during installation
• Premature color fading

Recommended Mactac laminate families include:

• PERMACOLOR ColorGard LUV
• RAYZor overlaminating films

Confirm the desired finish, durability, thickness, and printer compatibility before selecting the final laminate. Mactac specifically identifies ColorGard LUV and RAYZor overlaminating films as options that can extend graphic life.

Product Specifications

Specification	Detail
Manufacturer	Mactac
Brand	IMAGin
Product Line	B-free GRUV
Product Number	GV428P
SKU	GV428PW54L150
Film Type	Soft calendered PVC vinyl
Film Color	White
Finish	Matte
Film Thickness	3.2 mil
Adhesive Type	Permanent acrylic pressure-sensitive adhesive
Adhesive Appearance	Opaque
Adhesive Technology	Air-egress
Installation Method	Dry application
Width	54 inches
Length	150 feet
Approximate Roll Area	675 square feet
Outdoor Durability	Up to four years for unprinted film
Minimum Application Temperature	50°F
End-Use Temperature Range	-40°F to 180°F
Shelf Life	Two years under recommended storage conditions
Print Compatibility	Latex, solvent, eco-solvent, and UV inkjet
Recommended Surfaces	Flat and simply curved surfaces
Liner	Polycoated air-egress liner

The current Mactac product page lists a 90-pound air-egress liner, while the linked performance guide lists a 98-pound polycoated liner. Avoid publishing a liner basis weight until Mactac confirms the current construction for SKU GV428PW54L150.

Temperature and Storage Information

Apply GV428P at temperatures of 50°F or higher. Once properly installed, the media has a listed end-use temperature range from -40°F to 180°F.

The product has a two-year shelf life from the date of manufacture when stored in its original packaging at 60°F to 77°F and approximately 50 percent relative humidity.

Frequently Asked Questions

What is Mactac GV428P?

Mactac GV428P is a 3.2-mil matte white calendered PVC vinyl with permanent opaque acrylic adhesive and air-egress technology. It is designed for general-purpose indoor and outdoor printed graphics.

Is Mactac GV428P a cast or calendered vinyl?

GV428P is a soft calendered PVC film. It is designed for flat and simply curved surfaces rather than complex curves or deep channels.

Does GV428P have permanent adhesive?

Yes. It uses a permanent acrylic pressure-sensitive adhesive.

Is the adhesive opaque?

Yes. The opaque adhesive helps block the appearance of the application surface beneath the finished graphic.

What does B-free mean?

B-free refers to Mactac’s air-egress adhesive technology. The adhesive channels allow trapped air to escape during dry installation, helping reduce bubbles.

Can GV428P be printed with HP Latex ink?

Yes. The current Mactac product listing includes latex printing compatibility.

Can GV428P be printed with solvent or eco-solvent ink?

Yes. GV428P supports solvent and eco-solvent inkjet printing.

Can GV428P be printed with UV ink?

Yes. The product supports UV inkjet printing.

What is the outdoor durability?

Mactac lists the unprinted film with outdoor durability of up to four years. Printed graphic durability depends on the ink, laminate, exposure, installation, and application conditions.

Does GV428P require lamination?

Lamination is not required for every application, but it is recommended when graphics need additional resistance to scratching, handling, cleaning, fumes, pollution, or environmental exposure.

Why Buy Mactac Media from Big Systems?

Choosing a printable vinyl involves more than matching a roll width to a printer. The ink technology, adhesive, surface, laminate, finishing process, installation conditions, and expected graphic life all affect the finished result.

Big Systems helps print providers match wide-format equipment, ink, media, laminates, cutters, RIP software, and color-management workflows to the actual application. Our manufacturer-certified sales and technical specialists can help determine whether Mactac GV428P is the right choice for your printer and project.

For over 30 years, Big Systems has supported customers with wide-format equipment, supplies, installation, service, workflow consulting, and ongoing production guidance.

Create Smooth, Professional Graphics with Mactac GV428P

Order Mactac IMAGin B-free GRUV GV428P matte white vinyl for bubble-free indoor and outdoor graphics installed on flat or simply curved surfaces.

Add Mactac to your cart or contact a Big Systems specialist for media compatibility and application guidance.