Mail Slots Sizes: Complete List and Installation Guide

Navigate mail slots sizes with our detailed list, from standard to custom dimensions. Perfect for homeowners upgrading doors without drilling large letterbox holes.

Standard Mail Slot Sizes

Common measurements for easy replacement.
  • 3" x 1" (interior flaps).
  • 6.25" x 1.75" (exterior).
  • 7" x 2" (oversized).

Narrow Mail Slots for Thin Doors

Ideal for uPVC or slim panels.
  • Width: 5.5-6.5 inches.
  • Height: 1.25-1.75 inches.
  • Depth: 0.5 inches.

Large Capacity Sizes

For magazines and parcels.
  • 8" x 2.5" models.
  • Adjustable throat options.
  • Heavy-duty brushed steel.

Custom and European Sizes

Metric conversions included.
  • 40x350mm (UK standard).
  • 50x400mm (EU large).
  • Bespoke cutting services.

Rustic and Decorative Sizes

Style meets function.
  • Antique brass 6x1.5". Vintage 5.75x1.25". Modern glass inserts.

Measuring Your Door for Perfect Fit

Pro tips for accuracy.
  • Use template provided. Account for door thickness. Check flap clearance.

Budget Size Options Under $20

Affordable yet durable.
  • Plastic 6x1" kits. Aluminum basic sets. DIY installation packs.

Frequently Asked Questions

What is the most common mail slot size?

6.25" wide by 1.75" high for standard US doors.

How to measure for mail slots sizes?

Measure exterior opening and door thickness precisely with calipers.

Are there mail slots sizes for glass doors?

Yes, adhesive or frameless glass-compatible models available.

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