Custom-Cut Box Dividers for Stock Shipping Cartons

Enter your inside carton size and grid count to calculate exact cell clearance and lot pricing. Every set is slotted to order at US partition plants in chipboard, corrugated, white vial board, or permanent conductive ESD.

Box Inside L × W × H (in.)
Cell Grid
CNC machined aluminum, turned shafts, anodized fittings, hardware kits up to 16 oz per cell
Assembly & Pads
Quantity (Sets)
Schedule
$293
50 sets × $5.86/set · US Ground shipping included
TOP PLAN VIEW — SCALE AUTO 5 × 4 GRID (20 CELLS)
BOX L: 12" (305mm)BOX W: 9" (229mm)CELL CLEARANCE: 2.34" × 2.19" × 5.88" (59.5 × 55.6 × 149.2 mm)
Usable Cell L × W 2.343" × 2.189" 59.5 × 55.6 mm
Max Round Vial / Part OD Ø 2.15" Ø 54.6 mm
Partition Height 5.88" (149.2 mm) No layer pads
Construction 7 strips / set Ships flat-slotted · 0.04" cal.
Interlocking slotted box dividers holding parts inside a shipping carton
.040" Kraft Chipboard: Solid recycled fiberboard, 40 pt caliper Order $39 3-Material Sample Kit →

Verify Fit & Board Rigidity First: 3-Material Sample Kit for $39

Receive one interlocking sample set each of .040" Heavy Kraft Chipboard, .024" White Low-Lint SBS Vial Board, and 1/8" Conductive Black ESD Corrugated via free US Ground shipping. Every sample kit includes a full $39 credit toward your first production order of 25 sets or more.

$39 · Free US Ground Order 3-Material Sample Kit →

Ready-Spec Partitions for Standard Stock Shipping Boxes

Pre-engineered partition sets sized with exact 1/8" perimeter clearance for high-volume Uline shipping cartons. Order a single lot or lock in a 12% discount with scheduled monthly restocks.

SKUFits Stock CartonGridUsable Cell (L × W × H)Board MaterialPack QtyOne-TimeMonthly (-12%)Action
EP-1209-20C12" × 9" × 6"
S-4406
5 × 4 (20)2.34" × 2.19" × 5.88"
59.5 × 55.6 mm
.040" Kraft Chipboard
Collapsed flat
25 sets$89
$3.56/set
$78/mo
$3.12/set
Spec & Order →
EP-1212-16B12" × 12" × 8"
S-4124
4 × 4 (16)2.88" × 2.88" × 7.75"
73 × 73 mm
1/8" B-Flute Corrugated
Collapsed flat + pads
25 sets$118
$4.72/set
$104/mo
$4.16/set
Spec & Order →
EP-1612-24C16" × 12" × 8"
S-4235
6 × 4 (24)2.61" × 2.94" × 7.88"
66.4 × 74.7 mm
.040" Kraft Chipboard
Pre-assembled
25 sets$135
$5.40/set
$119/mo
$4.76/set
Spec & Order →
EP-0808-36V8" × 8" × 4"
S-4598
6 × 6 (36)1.29" × 1.29" × 3.88"
32.8 × 32.8 mm
.024" White SBS Board
Pre-assembled
50 sets$129
$2.58/set
$114/mo
$2.28/set
Spec & Order →
EP-1008-48V10" × 8" × 4"
S-4616
8 × 6 (48)1.21" × 1.29" × 3.88"
30.8 × 32.8 mm
.024" White SBS Board
Pre-assembled
50 sets$145
$2.90/set
$128/mo
$2.56/set
Spec & Order →
EP-1210-20B12" × 10" × 6"
S-4130
5 × 4 (20)2.27" × 2.38" × 5.63"
57.8 × 60.3 mm
1/8" B-Flute Corrugated
Collapsed flat + pads
25 sets$112
$4.48/set
$99/mo
$3.96/set
Spec & Order →
EP-1210-12E12" × 10" × 6"
S-4130 / ESD Tote
4 × 3 (12)2.88" × 3.21" × 5.75"
73 × 81.5 mm
1/8" Conductive ESD
Collapsed flat + pads
25 sets$165
$6.60/set
$145/mo
$5.80/set
Spec & Order →
EP-1612-18E16" × 12" × 8"
S-4235 / ESD Tote
6 × 3 (18)2.54" × 3.88" × 7.75"
64.6 × 98.4 mm
1/8" Conductive ESD
Collapsed flat + pads
25 sets$215
$8.60/set
$189/mo
$7.56/set
Spec & Order →

Engineered by Part Type and Surface Sensitivity

Choose solid fiberboard to maximize cell count per carton, fluted corrugated to absorb drop shock on heavy parts, or carbon-impregnated board to shield static-sensitive electronics.

Slotted kraft chipboard dividers separating anodized CNC aluminum fittings inside a carton

CNC Machined, Turned & Anodized Metal Parts

Stop wrapping individual aluminum, brass, and ground steel parts in tissue or bubble pouches. Solid .040" kraft chipboard and 200# B-flute partitions keep external threads, sealing bores, and Type II/III anodizing isolated from part-on-part abrasion during parcel transit.

View Machine Shop Carton Specs →
White solid bleached sulfate 36-cell partition grid holding clear crimp-top glass vials

Glass Vials, Ampoules, Reagents & Dropper Bottles

Low-lint .024" Solid Bleached Sulfate (SBS) white partitions arrive pre-assembled and collapsed flat so packing operators expand a 36-cell or 48-cell grid into the carton in seconds. Sized to tight tolerances for 2mL, 5mL, 10mL, 20mL, 30mL, and 60mL vials.

View Vial OD-to-Carton Lookup Table →
Matte black conductive ESD corrugated box partitions holding circuit boards

Conductive ESD Dividers for PCBs, Optics & Sensors

Permanent carbon-impregnated black corrugated board (10⁴ to 10⁵ ohms/sq per ANSI/ESD S541) drains static charges safely without humidity-dependent topical sprays or pink-poly bagging labor. Custom-slotted to fit shipping cartons and reusable plastic ESD line totes.

View Conductive ESD Specifications →

Zero Cutting-Die Fees & Monthly Blanket Restocks

Traditional box plants quote $450 to $900 in steel-rule die tooling and enforce 1,000-set minimums. Our partner divider plants precision-saw and rotary-slot custom strip lengths directly from master board rolls, allowing clean 25-set short runs and 4-to-6 business day turnaround.

Minimum Custom Run
10 to 25 partition sets (no tooling charge)
Dimensional Tolerance
±0.030" (±0.75 mm) on cell center-to-center spacing
Scheduled Restock Discount
12% off every shipment, cancel or adjust qty anytime
Exact-Fit Guarantee
Free expedited remake or 100% refund if any cut deviates from confirmed spec

Board Caliper & Material Specification Schedule

All four board grades are stocked continuously at US converting facilities for rapid slotting.

Board GradeNominal CaliperConstructionSurface / ESD SpecRecommended Part Weight & Use
.040" Heavy Kraft Chipboard0.04" (1.02 mm)Solid recycled fiberboard, 40 pt caliperStandard neutral pH, sulfur-freeCNC machined aluminum, turned shafts, anodized fittings, hardware kits up to 16 oz per cell
.024" White Low-Lint SBS Vial Board0.024" (0.61 mm)Solid bleached sulfate virgin paperboard, 24 pt caliperStandard neutral pH, sulfur-free2mL to 60mL crimp vials, serum bottles, diagnostic reagents, cleanroom & cosmetic glass
1/8" B-Flute 200# Kraft Corrugated0.125" (3.18 mm)200# Mullen test single-wall kraft corrugated, B-fluteStandard neutral pH, sulfur-freeHeavy stainless/steel castings, 60mL to 500mL glass bottles, valves, and shock-sensitive assemblies
1/8" Conductive Black ESD Corrugated0.125" (3.18 mm)Carbon-impregnated B-flute corrugated, ANSI/ESD S541 compliant10^4 to 10^5 ohms/sq surface resistivity, permanent non-sloughing carbonPopulated PCBs, sensor modules, avionics, optical transceivers, static-sensitive assemblies