ValBox 9x12 Self Seal Catalog Envelopes (250 Pack) White vs Blue Summit 13x18 Self-Seal Mailing Envelopes, 28lb Kraft, 50 pcs
Overall winner: Blue Summit 13x18 Self-Seal Mailing Envelopes, 28lb Kraft, 50 pcs
Key Differences
Blue Summit (A) offers larger kraft 13x18 mailers in a 50-pack with heavyweight 28lb paper and self-seal strong adhesive, suited for bulkier documents up to ~60 sheets; ValBox (B) is a 9x12 white catalog envelope in a larger 250-count with peel-&-seal closure but has mixed feedback on thickness with some calling it very thin. Choose A when you need heavier-duty, larger kraft mailers; choose B when you need more envelopes in a smaller 9x12 size and a plain white appearance
ValBox 9x12 Self Seal Catalog Envelopes (250 Pack) White
9x12 self-sealing catalog envelopes, 250 packs in a white finish. Ideal for mailing, organizing, and storing documents. Customers note good quality, strong adhesive, and secure closure
Pros
- strong adhesive
- secure closure
- includes storage box
- sized for standard letter papers
Cons
- mixed sentiment on thickness
Blue Summit 13x18 Self-Seal Mailing Envelopes, 28lb Kraft, 50 pcs
Rigid kraft mailing envelopes with self-seal adhesive; holds up to 60 sheets of standard paper. Durable 28lb material resists tearing and puncturing, and seals without moisture. Customers note sturdy quality and reliable seal
Pros
- heavyweight kraft construction
- self-sealing adhesive, no moisture needed
- holds up to 60 sheets
- twist-free, sturdy seal
Cons
- dimensions listed as 13 x 17.7 may differ from standard 13x18
- manila color may show through for very light papers
Head-to-Head
| Criteria | Winner |
|---|---|
| Price | Blue Summit Supplies |
| Durability | Blue Summit Supplies |
| Versatility | Blue Summit Supplies |
| User Reviews | Blue Summit Supplies |