FRP Rectangular Graywater Holding Tank Supplier in the Philippines

An FRP rectangular graywater holding tank is a fiberglass reinforced plastic enclosure built from modular panels and assembled into a rectangular footprint, used to hold graywater, wastewater from sinks, showers, laundry, and similar sources, before it is treated, reused, or discharged. The rectangular shape and panel construction are the same modular build used in JOHOB's broader FRP water storage line, supplied under the TankSmith sister brand for turnkey installs, just configured for a holding application rather than potable storage. Because the panels bolt together on site, the tank can be sized and shaped to fit a specific utility room, basement, or service yard footprint rather than forcing a fixed cylindrical diameter. This matters for graywater systems specifically because holding tanks are frequently installed retroactively into existing mechanical rooms where floor space is already committed to other equipment such as pumps or boilers. JOHOB sources this tank through an ISO 9001 certified partner factory and delivers it with local warranty and after-sales support, nationwide across NCR, Luzon, Visayas, Mindanao, and PEZA, SBMA, and Clark locator zones. Buyers evaluating this tank type are typically specifying it as part of a larger water reuse or wastewater pretreatment scope, working alongside a mechanical or plumbing engineer, rather than purchasing it as a standalone fixture. Quotation is request-based; JOHOB responds to RFQs within 1 business day so the tank specification can be confirmed early in a project timeline.

A rectangular FRP tank uses floor space more efficiently than an equivalent-capacity cylindrical tank, since it can be pushed flush against walls and corners instead of leaving the curved dead space a round tank leaves behind. For graywater holding specifically, that matters because these tanks are usually retrofitted into mechanical rooms, basements, or outdoor service yards that were not originally designed around a tank footprint, so every square meter saved is a square meter available for pumps, piping, or access clearance. The modular panel construction behind the rectangular shape also means the tank is assembled on site rather than delivered as one oversized vessel, which keeps delivery logistics workable even on sites with tight loading access, a common constraint in dense Metro Manila commercial buildings and multi-tenant industrial parks. Rectangular panel tanks share the same WRAS-certified panel standard, ISO 9001 manufacturer quality system, TUV SUD testing, and CE marking as JOHOB's other FRP modular tanks, so choosing the rectangular format for space efficiency does not require trading down on build quality or certification. For buyers comparing tank shapes during the design phase, the practical decision point is almost always available footprint: a rectangular tank wins when the install location is already space-constrained, while a cylindrical tank remains the simpler choice when there is open floor area to work with.

Because the tank is built from bolted FRP panels rather than cast or molded as one piece, capacity scales by adding panel rows and sections rather than by selecting from a fixed catalog of pre-set sizes, which lets the final tank match the actual graywater load calculated for a specific building rather than rounding up to the nearest stock size. JOHOB's standard lead time for ex-stock configurations is 21 to 35 days, and 45 to 90 days for made-to-order configurations that require non-standard panel counts or fittings. Delivery is nationwide: NCR, the rest of Luzon, Visayas, Mindanao, and PEZA, SBMA, and Clark locator zones are all served from the same supply chain, so a graywater tank specified for a Luzon hotel project and one specified for a Visayas food processing plant follow the same lead time bands. Because pricing is quote-based rather than published, the practical path for a buyer is to submit the required capacity, available footprint dimensions, and site location through an RFQ; JOHOB responds within 1 business day with a sizing and lead time confirmation. For projects on a fixed construction schedule, confirming ex-stock versus made-to-order status early is the single factor most likely to affect whether the tank arrives on the critical path or ahead of it, so buyers working against a hard install date should flag that constraint in the RFQ itself rather than assuming the faster lead time band applies by default.

The FRP panels used in this tank are WRAS-certified, the manufacturer operates under an ISO 9001 quality management system, and the panels are TUV SUD tested and CE marked, the same certification set applied across JOHOB's FRP modular tank line generally, not a reduced specification for the graywater configuration. These certifications are the ones to request in writing during procurement review, since they are the items a facilities engineer or compliance officer will typically ask for before sign-off. On commercial terms, pricing is quote-based with no public price list, 12% VAT applies for VAT-registered buyers, and PEZA or SBMA locators and exporters qualify for zero-VAT treatment. Standard lead time is 21 to 35 days ex-stock or 45 to 90 days made-to-order, and RFQs receive a response within 1 business day. Buyers should route an RFQ with the required holding capacity, site location, and whether the project falls under a PEZA, SBMA, or Clark zone so the quote reflects the correct VAT treatment from the first response rather than requiring a revision later in the procurement cycle.

Graywater holding tanks are most commonly specified by buyers already managing a high-volume wastewater stream as part of their core operation, which in JOHOB's product and industry coverage lines up most directly with commercial laundry operations, hotels and hospitality properties, hospitals and healthcare facilities, and food and beverage processing sites. In each of these settings the tank sits ahead of a treatment, recycling, or controlled discharge step rather than functioning as a standalone storage fixture, so it is typically specified alongside pumping or treatment equipment rather than purchased in isolation. A facilities or MEP engineer on one of these projects is the most likely buyer persona, evaluating the tank as one line item inside a larger water management or sustainability scope rather than shopping for a tank on its own. Because JOHOB already supplies pumping systems, steam and boiler systems, and FRP water storage across these same verticals, a graywater holding tank RFQ submitted alongside a related pump or piping requirement can be quoted and scheduled together, which keeps the overall project on a single supplier timeline instead of coordinating separate vendors for tank, pump, and piping on the same job.

JOHOB Hardware Trading is a Philippines-based industrial equipment supplier serving commercial, industrial, and institutional buyers nationwide, sourcing this tank through a vetted overseas manufacturer and an ISO 9001 certified partner factory, and backing it with local warranty and after-sales support rather than leaving the buyer to coordinate directly with an overseas factory. For water storage specifically, JOHOB's sister brand TankSmith handles turnkey modular tank installs, so a buyer who needs the graywater holding tank installed and commissioned, not just delivered, has a direct path to that scope under the same group rather than sourcing an installer separately. Coverage is nationwide across NCR, Luzon, Visayas, Mindanao, and PEZA, SBMA, and Clark locator zones, with a 1 business day RFQ response standard and the full certification set (WRAS-certified panels, ISO 9001, TUV SUD testing, CE marking) carried on every FRP tank in the line, including this rectangular graywater configuration. Buyers evaluating multiple suppliers for the same specification should request lead time (21 to 35 days ex-stock, 45 to 90 days made-to-order) and VAT treatment in writing at RFQ stage, since both are standard JOHOB commitments that a quote should state explicitly rather than leave implied.