Clue: Certain encl.

Answer: SASE

Length: 4

---

Similar Clues:

• Business letter encl. (SASE with 4 letters)
• Enclosed in a shell (KERNELED with 8 letters)
• Ring enclosure (ROPES with 5 letters)
• Farmyard enclosures (STIES with 5 letters)
• Invoice encl. (ENV with 3 letters)
• Enclosed (e.g. CASED with 5 letters)
• Envelope enclosure (INSERT with 6 letters)
• Farm enclosures (e.g. PENS with 4 letters)
• Rush hour certainty (TRAFFIC with 7 letters)
• Enclosure for grain or coal (BIN with 3 letters)