| Type | Specification |
|---|---|
| Product Type | Fillable Cardboard Letters |
| Dimensions | Custom Height & Width ±1 mm |
| Material | Eco Kraft Cardboard 300–500 GSM |
| Structure | Hollow 3D Letter Design |
| Filling Capacity | Up to 50 g Loose Fill or Candy |
| Surface Finish | Matte / Gloss Laminate ± |
| Printing | CMYK, PMS, or No Print |
| Logo | Custom Branding on Face or Side |
| Colour Options | Full Pantone Range |
| Opening Type | Top Lid / Removable Panel |
| Closure | Adhesive Tab / Magnetic Lock |
| Edge Precision | Die-Cut ±0.5 mm |
| Quantities | 50 – 100,000 Units |
| Optional Effects | Foil Stamping, Embossing, Spot UV |
| Proof | Flat Artwork, 3D Mock-up |
| Sampling | Physical Sample on Request |
| Turn Around Time | 5–8 Business Days |
| Packing | Flat Pack / Custom Tray Packaging |
Fillable Cardboard Letters
Our Fillable cardboard letters are a sleek and customisable decorative product to be used in events, retail outlets, and personal events. These are hollow capacious letters and are meant to be stuffed with balloons, flowers, lights, sweets or themed decorative materials and you can create beautiful personalised set ups that attract attention at first glance. Our fillable letters are made of quality and tough cardboard and are very light, but strong enough to support the shape of the letter throughout your event.
Our Cardboard Letters are available in different sizes and can be cut to any shape to fit your theme or brand name of an event. The finishes are also clean so that you can paint, wrap or have your personal prints with a full creative freedom. The Product Boxes UK has been offering high quality empty cardboard boxes wholesale at competitive prices with affordable, and fast delivery. So don’t wait and place your order today.
Q: How can fillable cardboard letters make party gifts more engaging?
A: They allow you to insert candies, small toys, or notes into each letter, creating a personalised and interactive gift that stands out at birthdays, weddings, or themed events.
Q: What types of treats or items fit best in fillable cardboard letters?
A: Small chocolates, candies, mini toys, confetti, or folded notes work well, but oversized items may prevent the letter from closing properly.
Q: Are fillable cardboard letters suitable for brand promotions?
A: Yes, custom printing and inserts can showcase logos, promotional messages, or product samples, making them an attractive marketing tool for events or giveaways.
Q: How durable are fillable cardboard letters for repeated handling?
A: High-quality rigid or corrugated cardboard letters maintain shape and support contents without bending, even when handled multiple times during events or displays.
Q: Can fillable cardboard letters be used as decorative display pieces?
A: Yes, large letters can be displayed individually or combined to spell names, greetings, or brand slogans, adding a creative visual element to parties, stores, or photo backdrops.
Q: What finishing options enhance the appearance of fillable cardboard letters?
A: Foil stamping, embossing, spot UV, or full-colour printing can make letters visually striking, matching event themes or brand aesthetics while highlighting contents inside.
Q: How do I ensure fillable letters are easy to open for recipients?
A: Choose letters with tuck-in flaps, removable lids, or magnetic closures that are secure but simple to open, especially for children or event guests.
Q: Are fillable cardboard letters safe for food items like candies or chocolates?
A: Yes, when made from food-safe cardboard or with optional inner liners, letters can safely hold wrapped or unwrapped treats without contaminating contents.
Q: How do I select the right size of fillable cardboard letters for my event?
A: Consider the largest items you plan to include and choose letters with enough depth and width to fit them without crushing, while keeping the display visually balanced.
Q: Can fillable cardboard letters be shipped directly to customers?
A: Yes, with reinforced edges and padding, they can be mailed safely. They’re ideal for gift boxes, subscription packages, or direct-to-consumer deliveries where presentation matters.
Related Products
Corrugated
A fluted box material is created to enhance the strength of the boxes for shipment purposes.
Cardboard
Light in weight and easy to print cardstock material that would be molded into any shape and style.
Kraft
Slightly brown paper-like thin material for packaging created by wood pulp and heaving eco-friendly nature.
Rigid
A thick cardboard box that is high in strength but also luxurious in presentation.
Holographic
An impressive as well as laminated paperboard that emulates a 3d look to colors.
Offset Print
High-quality and low-cost printing option that transfers the image to the box surface in a good resolution.
Digital Print
Digital printing techniques do not require any sort of printing plate as it transfers the image to the surface of the box easily without a plate.
UV Print
Safeguard the printed area from fading and make them more attractive.
Pantone
Utilization of a universally accepted color-matching system for printing the boxes.
Hot Foil Stamping
Print the foil detail by using the hot dies on the surface of the packaging boxes.
Cold Foil Stamping
It is a removable foil stamp that is applied without pressing any hot die or pressure on the boxes.
Blind Embossing
Create the raised area on the box surface by applying the pressure, not the inks.
Blind Debossing
Just like the craving on the box created by using letter plates or letter presses.
Registered Embossing
Create both the texture as well as the depth and endow a 3d effect to the area of the box.
Combination Embossing
Both the design as well as foiling is utilised at the same time to create a more appealing presentation.
Window Patching
Create a plain see-through cut in the box that is covered with a see-through plastic sheet.
Aqueous Coating
Provide tear-free impact to the packaging with a clear and fast-drying water-based coating at the time of printing.
UV Coating
Add protection against the damaging impact of UV sun rays by applying the UV coating to the packaging.
Spot Gloss UV
Annex the glossy effect on the specific areas of the packaging through spot coating.
Soft Touch Coating
Use the soft touch coating to make the darker and dull areas of the packaging velvety and smooth.
Varnish
Provides protection as well as perfect presentation to the printing part of boxes.
Lamination
A very thin plastic film is pasted in the boxes to make them more durable and long-lasting.
Anti-Scratch Lamination
This thin film of plastic is used to endow the scuff as well as scratch resistance to the boxes.