Boston Metro 3-1/4" OD Snap-in Strainer Grid JN-6320
OD: 3.25" | Prong Depth: Heavy Gauge | Alloy: SUS304 / Lead-Free Brass. Ideal for Back Bay historic tile drain collars.
Priority Catalog For Boston Retrofits
High-Velocity Replacement Drain Trim & Strainer Grids
Designed specifically to address aging plumbing footprints across Greater Boston, Suffolk County multi-family units, and Middlesex commercial installations. Precision OD calibrations ensure an exact zero-play fit into pre-existing cast iron, PVC, and brass receptor bodies.
Greater Boston 4-1/4" OD Snap-in Strainer Grid JN-6321
OD: 4.25" | Configuration: Multi-Hole Radial | Finish: Polished Chrome / PVD Brushed Nickel. Standard Seaport residential replacement.
New England Drain Trim Set Grid Assembly JN-6322
Type: Complete Trim Conversion Kit | Surface: Electroplated / Matt Black PVD. Engineered for Cambridge boutique hotel bathroom overhauls.
Boston Academic Housing 4-1/4" Strainer Grid JN-6323
OD: 4.25" | Feature: High-Tension Perimeter Prongs | Flow Rate: Exceeds 7.5 GPM standard. Tamper-resistant for institutional dormitories.
Regional Demand Insights
Greater Boston’s Plumbing Architecture: The Replacement Drain Challenge
The commercial plumbing supply ecosystem in Greater Boston (encompassing Suffolk, Middlesex, Norfolk, and Essex counties) functions within one of the oldest and most strictly regulated structural environments in North America.
Historic Retrofit Dimensionality
From the Victorian brownstones of Back Bay and Beacon Hill to the triple-deckers of Dorchester and Somerville, thousands of bathrooms feature legacy cast iron and rough-in copper drain assemblies dating from 1920 to 1970. Demolishing tiled wet-room subfloors to replace a rusted receptor is economically non-viable for property managers. They require precision snap-in replacement grids (3-1/4", 3-3/8", 4-1/4" OD) with spring-temper prongs that secure firmly into weathered internal receiver threads.
248 CMR 10.00 Regulatory Rigor
The Massachusetts Board of State Examiners of Plumbers and Gas Fitters enforces 248 CMR (Uniform State Plumbing Code), requiring drainage components to demonstrate complete non-porosity, certified toxicological safety (lead-free AB1953 & NSF/ANSI 61 compliance), and documented hydraulic discharge efficiency. Low-cost zinc alloy die-cast replacements disintegrate within months under regional water conditions, failing inspection and risking costly structural leaks.
High-Density Turnaround Pressures
Hosting over 35 colleges and universities (Harvard, MIT, Boston University, Northeastern), Boston experiences peak residential tenant turnover annually around September 1st. Mechanical contractors and institutional maintenance crews demand wholesale access to durable, snap-in replacement strainers and bath conversion kits that eliminate hair clogs, resist aggressive quaternary ammonium disinfectants, and install in under two minutes per unit.
248 CMR
MA Code Alignment
100% compliant with Mass. plumbing board guidelines
±0.03mm
CNC Stamping Precision
Eliminates rattles & loose fits in worn collars
SUS304/Brass
Zero-Zinc Integrity
Impervious to harsh local chloramines & hard water
150,000+
Units Shipped Annually
Supplied to New England master distributor channels
Sourcing Architecture & Tariffs
Global Macro Dynamics & The China-Thailand Dual-Origin Advantage
North American plumbing hardware importers face persistent tariff exposures (Section 301 duties), marine freight volatility at East Coast entry points (Conley Container Terminal in Boston, Port of New York & New Jersey), and the imperative for verifiable metallurgical traceability. JANA Plumbing solves these structural friction points by operating twin ISO 9001-certified manufacturing hubs in Yuhuan, China, and Kabinburi, Thailand.
| Evaluation Parameter | Generic Commodity Importers | JANA Plumbing: China Facility (Yuhuan) | JANA Plumbing: Thailand Hub (Kabinburi) |
|---|---|---|---|
| Primary Specialization | Trading middlemen; fragmented third-party job shops. | Heavy hydraulic forming, deep progressive stamping, CNC machining since 1998. | 14,400 m² high-automation plant; robotic polishing & assembly lines. |
| North American Tariff Risk | Full 25% Section 301 tariff exposure on finished plumbing brass. | Cost-optimized high-volume runs with integrated consolidation. | 0% or reduced Section 301 tariff origin for eligible North American imports. |
| Metallurgical Purity | Recycled mixed brass or zinc-aluminum alloys (Zamak 3). | Lead-Free Eco Brass (C69300 / CW617N) & certified austenitic SUS304/316. | Strict automated spectroscopic scrap separation and purity tracking. |
| Certification Footprint | Uncertified or self-declared CE markings non-compliant with US codes. | cUPC (IAPMO No. 6229 / 8175), AB1953 Lead-Free, ISO 9001, BRC. | Mirrored quality management standards matching China headquarters. |
| Boston Distribution Lead Time | 16–22 weeks with erratic container allocation. | Standardized 35–45 day factory turnaround with direct sea routing. | Optimized Pacific-to-Atlantic carrier contracts reaching Port of Boston cleanly. |
Mitigate Tariffs & Audit Your Supply Chain Today
Whether your procurement team requires container-load shipments to New England regional distribution centers or customized private-label retail master packaging, our dual-hub production provides unmatched flexibility.
Engineered Use-Cases
Targeted Deployment Scenarios Across Greater Boston Infrastructure
Shower drain components are subjected to starkly divergent hydraulic and mechanical demands depending on building occupancy profiles. JANA’s product catalog provides tailor-made solutions across key regional market segments:
Student Housing & High-Density Multifamily
Properties across Allston, Brighton, Mission Hill, and Cambridge experience severe shower drain clogging due to hair build-up, soap scum agglomeration, and tenant neglect. JANA’s 4-1/4" and 4-1/2" OD snap-in grids feature computer-modeled water apertures that optimize hydraulic velocity while intercepting macro-debris before it reaches deep p-traps. The heavy-duty spring prongs prevent casual tampering or accidental dislodgement during routine cleaning.
Luxury Hospitality & Boutique Historic Hotels
High-end renovations in Boston’s Financial District, Downtown Crossing, and Back Bay require decorative cohesion. Replacing dated chrome hardware with modern PVD finishes (Matte Black, Brushed Brass, Oil Rubbed Bronze) cannot require pulling out entire under-floor drain assemblies. Our drain trim set grids and lift-and-turn bath waste conversion kits allow luxury hotels to overhaul wet-room visual aesthetics within a 15-minute maintenance window per guest room.
Life Sciences, Healthcare & Athletics
World-class biomedical facilities in Kendall Square and hospitals within the Longwood Medical Area utilize aggressive chlorine- and peroxide-based decontamination solutions. Common plumbing trim quickly suffers from pitting corrosion and hydrogen embrittlement. JANA manufactures industrial-grade SUS304 and solid forged brass grids with electrochemical passivation, delivering uncompromised metallurgical resistance against harsh sanitization protocols.
Engineering Evolution
Technological & Material Trends in Plumbing Drainage Engineering
The commercial drainage sector is undergoing a rapid transition away from low-cost cast pot metals toward high-precision stamping and Physical Vapor Deposition (PVD). Understanding these trends is critical for wholesale buyers seeking to reduce warranty claims and increase customer retention.
From Fastened Screws to Snap-in Spring Tension
Traditional replacement strainers relied on brass countersunk screws that frequently strip, corrode, or seize within drain body collars over decades of mineral deposition. Modern specifications favor friction-retained snap-in designs with heat-treated spring steel prongs. JANA’s stamping dies produce precision-calibrated outward lateral tension, providing rigid seating while permitting straightforward extraction using a simple pick tool for maintenance.
Hydrodynamic Slotted Geometries
Water clearance is governed by fluid mechanics under ASME A112.18.2 / CSA B125.2 standards. Oversized openings risk allowing jewelry and foreign objects into sewer lines, while excessively small apertures induce hydraulic surface tension pooling. JANA engineers slot patterns using computational fluid dynamics (CFD) to maximize open surface drainage area while strictly complying with barrier interception norms.
Advanced PVD & Multi-Layer Electroplating
Standard wet plating on brass often flakes in warm, humid coastal air like Boston’s. JANA uses vacuum Physical Vapor Deposition (PVD) to bond micro-thin metallic nitrides to polished substrates at the atomic level. This yields ultra-hard finishes (hardness exceeding 2000 Vickers) resistant to abrasive cleaners, heel stomping, and saltwater corrosion from winter street salting brought indoors.
Full Commercial Replacement Range
OEM Certified Shower & Bath Drain Conversion Hardware
Browse our precision replacement inventory available for wholesale distribution and commercial project specification throughout the New England territory. All components are batch-tested and cUPC certified.
Boston 4-1/2" OD Snap-in Strainer Grid JN-6324
OD: 4.50" | Application: Large receiver bodies | Finish: Polished Chrome / PVD Satin Nickel.
Wholesale 4" OD Strainer Grid JN-6325 Boston Series
OD: 4.00" Exact | Mounting: Center Snap-Tension | Material: Heavy-gauge SUS304.
New England 4-1/4" OD Strainer Grid JN-6326
OD: 4.25" | Pattern: Geometric Water Slots | Cert: UPC & cUPC Listed.
Snap-in Strainer Grid JN-6327 Boston Spec Series
Design: Concentric Slotted | Prongs: Triple-Flange Spring Grip | Bulk Packaging: Available.
Cambridge Metro 4-1/4" Snap-in Grid JN-6328
OD: 4.25" | Flow Capacity: 8.2 GPM | Profile: Flush-mount bevel for bare feet comfort.
Boston 4-5/8" OD Snap-in Strainer Grid JN-6329
OD: 4.625" (4-5/8") | Use: Heavy industrial/institutional shower receptors | Alloy: Solid Brass / SS.
Somerville Historic 3-3/8" OD Strainer Grid JN-6330
OD: 3.375" (3-3/8") | Application: Pre-war legacy receivers | Tension: Reinforced perimeter prongs.
Lift & Turn Bath Waste Conversion Kit JN-6109
Thread: 1-1/2" or 1-3/8" NPSM Coarse/Fine | Trim: Overflow faceplate + Stopper. Top hotel retrofit choice.
Compliance & Specifications
Global Enterprise Procurement: Engineering Audit Criteria
When sourcing replacement shower and bath trim parts for distribution across North American professional building channels, supply managers must safeguard against code violations and high warranty liability. The following verification protocols are standard across all JANA product deliveries:
Traceable Lead-Free Certification
Under California AB1953, Vermont Act 193, and US Federal Public Law 111-380, all wetted plumbing fittings must have a weighted average lead content not exceeding 0.25%. JANA conducts optical emission spectrometry (OES) on every furnace melt batch, providing certified heat sheets with every shipment to prove non-leaching compliance.
cUPC & ASME A112.18.2 Listings
Plumbing inspectors in the City of Boston (Inspectional Services Department) look for explicit IAPMO / UPC marks stamped into trim assemblies. Unlisted generic drain hardware can stop a commercial multi-family occupancy certificate dead in its tracks. Our products are backed by active IAPMO file listings (No. 6229, 8175, 12307).
Packaging & Barcode Integration
We supply OEM clients across North America with flexible packaging: retail-ready clam-shells with tamper-proof heat sealing, UPC-A barcodes, and bilingual instructions, or cost-effective master-carton contractor bulk packs (50–100 pieces/case) designed for distributor warehouse pick-and-pack efficiency.
Technical Support & Sourcing FAQ
Frequently Asked Questions for Plumbing Hardware Procurement
Clear, definitive engineering and logistics answers to common questions asked by supply chain executives, wholesale distributors, and mechanical contractors.
Are JANA’s replacement shower drain grids and bath parts compliant with the Massachusetts Uniform State Plumbing Code (248 CMR)?
Yes. Massachusetts enforces 248 CMR 10.00, which requires drainage accessories to meet ASME A112.18.2 / CSA B125.2 standards and adhere strictly to lead-free materials limits. JANA Plumbing’s manufacturing facilities in Yuhuan, China, and Kabinburi, Thailand, hold active UPC and cUPC certifications issued by IAPMO R&T (Listing Nos. 6229, 8175, and 12307), alongside AB1953 lead-free verification. These certificates give New England plumbing contractors and building inspectors full documentation of compliance.
How do snap-in strainer grids maintain spring tension without corroding over years of shower exposure?
Corrosion and metal fatigue in conventional snap-in grids typically stem from low-grade carbon steel clips or cheap zinc alloy bodies. JANA uses cold-rolled, austenitic AISI 304 or 316 stainless steel for its stamped grids and formed retaining prongs. The spring temper of the alloy provides an optimal elastic deformation threshold: it flexes inward smoothly during insertion into 3-1/4", 4-1/4", or 4-1/2" collars, then exerts sustained radial pressure against the drain throat, preventing lift without deteriorating under constant soap, shampoo, and bleach exposure.
What is the logistical advantage of sourcing from JANA’s Thailand factory for Boston and East Coast ports?
Our 14,400 m² automated facility in Kabinburi Industrial Zone, Prachinburi, Thailand (fully operational since December 2023), serves as a strategic dual-origin hub. For North American plumbing hardware importers, sourcing from Thailand mitigates punitive Section 301 tariffs applied to Chinese-origin brass and sanitary goods. Furthermore, shipments routed from Thailand through maritime carriers servicing East Coast ports (Port of Boston Conley Terminal or NY/NJ) benefit from diversified container freight contracts and reduced geopolitical supply chain vulnerability.
Can JANA manufacture custom outer diameters (OD) or custom prong depths for historic renovation projects?
Yes. As an authentic OEM/ODM manufacturer with nearly 30 years of in-house tooling, progressive die stamping, and CNC machining expertise, JANA frequently produces non-standard geometries. If your multi-family renovation or historical restoration requires a legacy 3-3/8", 4-5/8", or metric conversion grid, our engineering team can fabricate custom stamping tooling from your CAD drawings or physical site samples within 20 to 30 working days.
What decorative finishes are offered to match high-end bathroom architectural hardware?
We provide an extensive portfolio of long-lasting finishes: traditional mirror-polished chrome, high-durability electroplated satin nickel, and advanced Physical Vapor Deposition (PVD) coatings including Matte Black, Brushed Brass, Champagne Bronze, and Gunmetal Gray. Our PVD coatings undergo standard 96-hour neutral salt spray (NSS) testing to guarantee they will not pit, peel, or tarnish when installed in luxury hospitality or high-use residential settings.
What are the minimum order quantities (MOQ) and production lead times for wholesale shipments?
For standard catalog items (e.g., JN-6320 through JN-6330), our baseline MOQ is typically 500 to 1,000 units per SKU, with full container load (FCL) mixed-SKU combinations strongly encouraged to optimize ocean freight economics. Standard production lead times average 35 to 45 calendar days following drawing sign-off and PO confirmation. We also maintain buffer stocks of high-demand standard trim components for regular contract distributor partners.
Have specific engineering requirements or need factory listing documentation?
Contact Our Engineering Compliance Team