Mason Box Company - Universal Sealing Flap Boxes

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Universal Sealing Flap Boxes

Four sealing flaps provide tamper-evident protection. Just wet flaps and seal box, no tape, scissors or wrap needed.
'MB' boxes are kraft. 'R' boxes are white with 'wing-print' pattern.

Meets U.S. Postal Service regulations for Registered Mail. Ideal for all other classes too. Made from recyclable materials. Items may NOT be combined to receive quantity pricing.

Found in our catalog on page #25

Item	Inside Size
MB10	8 3/4" × 6 1/2" × 3 1/4"
MB2	4 1/8" × 2 3/4" × 1 1/2"
MB3	4 5/8" × 3 1/8" × 1 3/4"
MB4	5" × 3 1/2" × 1 7/8"
MB40	5" × 3 1/2" × 3/4"
MB5	5 1/2" × 3 7/8" × 1 15/16"
MB6	6" × 4 1/4" × 2 3/16"
MB7	6 3/4" × 4 5/8" × 2 1/2"
MB8	7 1/2" × 5" × 2 3/4"
MB85	10" × 3 3/8" × 1 7/8"
MB87	10" × 4 1/2" × 2"
MB88	11" × 3 3/8" × 1 7/8"
MB89	10" × 4 1/2" × 1"
MB98	9" × 7 3/4" × 2 1/8"
MB99	11 1/8" × 8 5/8" × 2 1/2"
R2	4 1/8" × 2 3/4" × 1 1/2"
R10	8 3/4" × 6 1/2" × 3 1/4"
R3	4 5/8" × 3 1/8" × 1 3/4"
R4	5" × 3 1/2" × 1 7/8"
R40	5" × 3 1/2" × 3/4"
R5	5 1/2" × 3 7/8" × 1 15/16"
R6	6" × 4 1/4" × 2 3/16"
R7	6 3/4" × 4 5/8" × 2 1/2"
R8	7 1/2" × 5" × 2 3/4"
R85	10" × 3 3/8" × 1 7/8"
R87	10" × 4 1/2" × 2"
R88	11" × 3 3/8" × 1 7/8"
R89	10" × 4 1/2" × 1"
R98	9" × 7 3/4" × 2 1/8"
R99	11 1/8" × 8 5/8" × 2 1/2"

Colors

Kraft, White