Boxes that fit Royal Mail Small Parcel

Royal Mail Small Parcel allows a maximum of 45 × 35 × 16 cm. These single wall boxes stay within that limit, so they post at the Small Parcel rate. Priced at 25 boxes, cheapest supplier first, ex-VAT.

Supplier	Internal size	Per box	Total @ 25
Cheaper PackagingCheapest	127 × 127 × 127 mm	8.0p	£2.00	Go
Cheaper Packaging	305 × 102 × 102 mm	10.0p	£2.50	Go
Cheaper Packaging	203 × 152 × 102 mm	12.0p	£3.00	Go
Kite Packaging	152 × 127 × 102 mm	17.0p	£4.25	Go
Cheaper Packaging	305 × 229 × 102 mm	18.0p	£4.50	Go
Kite Packaging	127 × 127 × 127 mm	19.0p	£4.75	Go
Kite Packaging	152 × 102 × 102 mm	19.0p	£4.75	Go
Cheaper Packaging	279 × 279 × 76 mm	23.0p	£5.75	Go
Kite Packaging	229 × 152 × 102 mm	20.0p	£6.00	Go
Kite Packaging	198 × 198 × 68 mm	24.0p	£6.00	Go
Rajapack	143 × 126 × 30 mm	25.0p	£6.25	Go
Kite Packaging	76 × 76 × 127 mm	19.0p	£7.60	Go

Fits within 45 × 35 × 16 cm (Royal Mail Small Parcel). Prices ex-VAT, checked weekly. Confirm final price and stock on the supplier's site.