Alpha International G3218D Granite Composite Double Bowl Undermount Cutout
Description
The Alpha International G3218D represents the ideal solution for kitchens requiring dual sink functionality without compromising on capacity. This 32-inch granite composite double bowl undermount features equal 50/50 bowl sizing, providing balanced workspace for multitasking food preparation and cleanup. Each bowl measures 14" wide by 16" deep with a full 9.5" vertical depth, offering substantial volume for pots, pans, and baking sheets. The DXF template package includes four precision-cut variants to accommodate different installation methods and fabricator preferences. Designed for 34-inch minimum base cabinets, this sink optimizes usable space while maintaining professional aesthetics.
Dimensions
- Overall Width
- 32"
- Overall Depth
- 18"
- Bowl Width
- 14"
- Bowl Depth
- 16"
- Corner Radius
- 0.3937"
Specifications
- Manufacturer
- Alpha International
- Model Number
- G3218D
- Installation Type
- Undermount
- Bowl Configuration
- Double
- Material
- Granite-Composite
- Min. Cabinet Width
- 34"
- Downloads
- 0
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The Alpha International G3218D represents the ideal solution for kitchens requiring dual sink functionality without compromising on capacity. This 32-inch granite composite double bowl undermount features equal 50/50 bowl sizing, providing balanced workspace for multitasking food preparation and cleanup. Each bowl measures 14" wide by 16" deep with a full 9.5" vertical depth, offering substantial volume for pots, pans, and baking sheets. The DXF template package includes four precision-cut variants to accommodate different installation methods and fabricator preferences. Designed for 34-inch minimum base cabinets, this sink optimizes usable space while maintaining professional aesthetics.
Installation Overview
Double bowl sink installations demand precise template execution to ensure both bowls align properly and achieve consistent reveal on all edges. The G3218D template provides four variant options: no-reveal for flush mounting, 1/8-inch reveal for standard undermount installation with visible rim protection, 1/2-inch overhang for maximum countertop support coverage, and drop-in configuration for top-mount applications. Fabricators should pay special attention to the center divider area when cutting, ensuring smooth transitions and adequate structural support. The equal bowl configuration simplifies installation by maintaining symmetry across the entire cutout. When positioning the sink, center it carefully in the base cabinet to allow proper clearance for plumbing and garbage disposal on either side. The granite composite construction requires robust undermount clip support—use minimum six clips per bowl for installations in materials over 2cm thickness. The R10 corner radius specification allows for efficient CNC cutting without stress concentrations in natural stone.
CNC Cutting Notes
Programming CNC toolpaths for double bowl sinks requires careful consideration of tool approach and retract positions to avoid collision with previously cut sections. Start with the inner bowl profiles and work outward to maintain maximum material stability during cutting. Use a 3/8-inch or smaller diameter bit to accurately follow the corner radius specifications without over-cutting. The template geometry is optimized for standard 2-flute carbide tooling with climb milling for cleanest edge finish. Set appropriate chip load and feed rates for your material—quartz typically allows 100-150 IPM with proper tooling, while natural granite may require 60-100 IPM. Consider implementing a finishing pass at reduced feed rate for superior edge quality on visible cutout perimeters. Always simulate your complete toolpath before cutting to verify proper clearances between the dual bowls and eliminate potential programming errors.
Material Compatibility
The G3218D double bowl configuration works exceptionally well across all countertop materials. In granite installations, the composite sink material matches the stone's durability while offering superior impact and chip resistance along the bowl edges. Quartz fabricators appreciate the dimensional consistency of composite sinks, which eliminates the fitting challenges sometimes encountered with cast iron or fireclay products. The sink's non-porous surface complements quartz's hygienic properties, creating an easy-to-clean kitchen environment. For marble countertops, granite composite sinks provide chemical resistance that natural marble lacks, protecting against etching from acidic foods and cleaners. The undermount style maximizes the visual impact of premium stone materials by eliminating the visible rim interruption of drop-in sinks. Double bowl functionality particularly suits large format porcelain slab installations where homeowners want distinct zones for food prep and cleanup.
Where to Buy
Source Alpha International G3218D sinks through authorized kitchen and bath distributors, fabricator supply warehouses, and specialty plumbing showrooms. The granite composite construction typically positions this model in the $400-550 retail range depending on color selection and finish options. Fabricators with established distributor relationships often receive preferential trade pricing on volume orders. Check sinks.org or contact Alpha International directly for dealer locations in your area. Many distributors stock popular colors in white, black, and metallic finishes for immediate availability.