Platinum 10″ & 12″ Flat Box Set with 40″-64″ Extendable Handle

Professional Flat Finishing Set — Two Boxes, One Extendable Handle

The Platinum 10" & 12" Flat Box Set with 40"–64" Extendable Handle gives professional drywall finishers two core flat-box sizes and one adjustable handle in one professional package.

Use the 10" box to build and finish flat and butt joints, then move to the wider 12" box as your finishing sequence progresses. The included extendable handle adjusts from 40" to 64" for added reach on walls and ceilings without requiring a separate handle for each box.

Professional Flat-Box Package

Bundle price: $695.00. This set combines the Platinum 10" Flat Finishing Box, 12" Flat Finishing Box, and 40"–64" Extendable Flat Box Handle in one listing.

Why Contractors Choose This Set

• Two essential flat-box sizes: Includes both 10" and 12" Platinum flat finishing boxes.
• One adjustable handle: Included Platinum handle extends from 40" to 64".
• Professional compound control: Adjustable crown settings help control the amount of joint compound applied.
• Serviceable tools: Platinum supports its finishing tools with replacement parts and detailed parts schematics.
• 5-Year USA Warranty: Added protection for your Platinum tool investment.

What’s Included

• 1 × Platinum 10" Flat Finishing Box — SKU PT-10FB
• 1 × Platinum 12" Flat Finishing Box — SKU PT-FB12
• 1 × Platinum 40"–64" Extendable Flat Box Handle — SKU PT-EBH

Not included: drywall compound pump, box filler, or other accessories not listed above.

Designed for Professional Drywall Finishing

The Platinum 10" and 12" boxes automatically dispense joint compound while feathering the edges of flat and butt joints. Adjustable crown controls allow the operator to change compound delivery as the joint progresses through successive coats. The included extendable handle provides additional reach while keeping the same box connection throughout the set.

One professional package with two core flat-box sizes and an extendable handle.