{"product_id":"mermade-39-x-50-bottom-outlet-keene-bowser-replacement-cover-only","title":"Mermade 39\" x 50\" Bottom Outlet (Keene-Bowser Replacement), Cover Only","description":"\u003cp data-path-to-node=\"0\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"4\"\u003eMer-Made 39\" × 50\" Bottom Outlet (Keene-Bowser Replacement) — Cover Only\u003c\/b\u003e\u003cspan\u003e (cataloged under Part # \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"101\"\u003e775-COVER \/ VFC-3950-BO\u003c\/b\u003e\u003cspan\u003e) is the replacement woven fabric filter jacket envelope designed to re-cover existing bare leaf frames in large-format commercial and municipal vacuum DE vaults retrofitting legacy \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"306\"\u003eKeene-Bowser (Bowser-Briggs \/ Keene Corporation)\u003c\/b\u003e\u003cspan\u003e filtration systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"1\"\u003e\u003cspan\u003eThis configuration supplies only the tailored synthetic filtration envelope,\u003c\/span\u003e\u003cspan\u003e factory-reinforced bottom discharge cutout collar,\u003c\/span\u003e\u003cspan\u003e top closure system,\u003c\/span\u003e\u003cspan\u003e and replacement compression felt gasket\/collar.\u003c\/span\u003e\u003cspan\u003e It is specified when the internal drainage matrix core and outer rigid PVC\/CPVC borders remain structurally sound,\u003c\/span\u003e\u003cspan\u003e but the existing cloth has blinded from chemical scale,\u003c\/span\u003e\u003cspan\u003e calcification,\u003c\/span\u003e\u003cspan\u003e or body oils,\u003c\/span\u003e\u003cspan\u003e or has torn from repeated backwash cycles.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eTechnical Specifications \u0026amp; Scope of Delivery\u003c\/h3\u003e\n\u003ctable data-path-to-node=\"4\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter \/ Detail\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,1,0,0\"\u003e\u003cb data-path-to-node=\"4,1,0,0\" data-index-in-node=\"0\"\u003eModel \/ Application\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,1,1,0\"\u003eMer-Made Replacement Septum Jacket (Keene-Bowser Retrofit)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,2,0,0\"\u003e\u003cb data-path-to-node=\"4,2,0,0\" data-index-in-node=\"0\"\u003eConfiguration\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,2,1,0\"\u003e\u003cb data-path-to-node=\"4,2,1,0\" data-index-in-node=\"0\"\u003eCover Only\u003c\/b\u003e (Fabric envelope + gasket; excludes internal grid core and frame)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,3,0,0\"\u003e\u003cb data-path-to-node=\"4,3,0,0\" data-index-in-node=\"0\"\u003eNominal Dimensions\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,3,1,0\"\u003e\u003cb data-path-to-node=\"4,3,1,0\" data-index-in-node=\"0\"\u003e39\" Wide × 50\" High\u003c\/b\u003e (approx. 991 mm × 1270 mm flat envelope)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,4,0,0\"\u003e\u003cb data-path-to-node=\"4,4,0,0\" data-index-in-node=\"0\"\u003eActive Surface Area\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,4,1,0\"\u003e\u003cb data-path-to-node=\"4,4,1,0\" data-index-in-node=\"0\"\u003e27.0 sq. ft.\u003c\/b\u003e nominal pre-coat area (both faces combined)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,5,0,0\"\u003e\u003cb data-path-to-node=\"4,5,0,0\" data-index-in-node=\"0\"\u003eEffluent Port Cutout\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,5,1,0\"\u003ePre-cut, reinforced bottom outlet collar aligned for Keene-Bowser 1-1\/4\" or 1-1\/2\" IPS spud profiles\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,6,0,0\"\u003e\u003cb data-path-to-node=\"4,6,0,0\" data-index-in-node=\"0\"\u003eOutlet Location\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,6,1,0\"\u003eBottom rail cutout (centered or offset to match specific vault header spacing)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,7,0,0\"\u003e\u003cb data-path-to-node=\"4,7,0,0\" data-index-in-node=\"0\"\u003eFabric Composition\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,7,1,0\"\u003eHigh-tenacity, custom-woven \u003cb data-path-to-node=\"4,7,1,0\" data-index-in-node=\"28\"\u003emonofilament or multifilament polypropylene\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,8,0,0\"\u003e\u003cb data-path-to-node=\"4,8,0,0\" data-index-in-node=\"0\"\u003eFiltration Porosity\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,8,1,0\"\u003eCalibrated nominal \u003cb data-path-to-node=\"4,8,1,0\" data-index-in-node=\"19\"\u003e20 to 30 micron\u003c\/b\u003e pore rating for diatomaceous earth pre-coat retention\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,9,0,0\"\u003e\u003cb data-path-to-node=\"4,9,0,0\" data-index-in-node=\"0\"\u003eClosure Mechanism\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,9,1,0\"\u003eHeavy-duty commercial \u003cb data-path-to-node=\"4,9,1,0\" data-index-in-node=\"22\"\u003eVelcro hook-and-loop\u003c\/b\u003e flap across the top rail (or heavy lace-up seam)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,10,0,0\"\u003e\u003cb data-path-to-node=\"4,10,0,0\" data-index-in-node=\"0\"\u003eIncluded Accessories\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,10,1,0\"\u003eHigh-density replacement felt compression collar (Part # \u003cb data-path-to-node=\"4,10,1,0\" data-index-in-node=\"57\"\u003eFELTCOLLAR\u003c\/b\u003e)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,11,0,0\"\u003e\u003cb data-path-to-node=\"4,11,0,0\" data-index-in-node=\"0\"\u003eExcluded Components\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"4,11,1,0\"\u003eRigid ABS\/PVC perimeter frame, internal open-matrix drainage grid core\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 data-path-to-node=\"6\"\u003eMaterial Properties \u0026amp; Operating Limits\u003c\/h3\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"0\"\u003eChemical \u0026amp; Electrolyte Resistance:\u003c\/b\u003e\u003cspan\u003e Virgin woven polypropylene fibers resist degradation,\u003c\/span\u003e\u003cspan\u003e rot,\u003c\/span\u003e\u003cspan\u003e and hydrolysis under prolonged exposure to high free chlorine levels,\u003c\/span\u003e\u003cspan\u003e sodium hypochlorite shock treatments,\u003c\/span\u003e\u003cspan\u003e and saline pool environments (2,\u003c\/span\u003e\u003cspan\u003e500 to 5,\u003c\/span\u003e\u003cspan\u003e000+ ppm NaCl).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"0\"\u003eAcid Wash Survivability:\u003c\/b\u003e\u003cspan\u003e Tolerates routine chemical descaling baths using dilute muriatic (hydrochloric) or citric acid solutions to dissolve embedded calcium carbonate,\u003c\/span\u003e\u003cspan\u003e iron scale,\u003c\/span\u003e\u003cspan\u003e and body grease without breaking down seam stitching.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003e\u003cb data-path-to-node=\"7,2,0\" data-index-in-node=\"0\"\u003eCake Retention \u0026amp; Release:\u003c\/b\u003e\u003cspan\u003e The balanced monofilament weave structure retains standard DE powder and perlite grades without bleed-through during initial pump startup,\u003c\/span\u003e\u003cspan\u003e while providing low-friction cake release during manual hose-down or backwash cycles.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"9\"\u003ePhysical Dimensions \u0026amp; Weight Estimates\u003c\/h3\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003eIndividual Cover Net Weight:\u003c\/b\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"43\"\u003e1.35 to 1.85 lbs (0.61 to 0.84 kg)\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003eSingle Boxed Cover Shipping Weight:\u003c\/b\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"50\"\u003e2.75 to 4.0 lbs (1.25 to 1.81 kg)\u003c\/b\u003e\u003cspan\u003e in a compact corrugated box.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"0\"\u003eMaster Carton \/ Multi-Pack (6 to 12 Covers):\u003c\/b\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"59\"\u003e13 to 24 lbs (5.9 to 10.9 kg)\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e\u003cb data-path-to-node=\"10,3,0\" data-index-in-node=\"0\"\u003eFull Vault Overhaul Pack (20 to 30 Covers):\u003c\/b\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cb data-path-to-node=\"10,3,0\" data-index-in-node=\"58\"\u003e32 to 52 lbs (14.5 to 23.6 kg)\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"12\"\u003eField Re-Covering \u0026amp; Tensioning Steps\u003c\/h3\u003e\n\u003col start=\"1\" data-path-to-node=\"13\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,0,0\"\u003e\u003cb data-path-to-node=\"13,0,0\" data-index-in-node=\"0\"\u003eStrip Old Jacket:\u003c\/b\u003e\u003cspan\u003e Remove the spent leaf from the pit.\u003c\/span\u003e\u003cspan\u003e Open the top closure seam,\u003c\/span\u003e\u003cspan\u003e pull the degraded cover off the core,\u003c\/span\u003e\u003cspan\u003e and discard the compressed felt collar.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,1,0\"\u003e\u003cb data-path-to-node=\"13,1,0\" data-index-in-node=\"0\"\u003eCore Wash-Down \u0026amp; Inspection:\u003c\/b\u003e\u003cspan\u003e Pressure-wash the bare polypropylene drainage grid to clear hardened DE residue.\u003c\/span\u003e\u003cspan\u003e Inspect the outer PVC frame for hairline cracks,\u003c\/span\u003e\u003cspan\u003e warpage,\u003c\/span\u003e\u003cspan\u003e or sharp burrs that could puncture the new fabric.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,2,0\"\u003e\u003cb data-path-to-node=\"13,2,0\" data-index-in-node=\"0\"\u003eSleeving the Frame:\u003c\/b\u003e\u003cspan\u003e Slide the replacement cover down over the 50\" height of the frame,\u003c\/span\u003e\u003cspan\u003e guiding the bottom reinforced cutout over the protruding lower discharge spud.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,3,0\"\u003e\u003cb data-path-to-node=\"13,3,0\" data-index-in-node=\"0\"\u003eSeating the Cutout:\u003c\/b\u003e\u003cspan\u003e Stretch the reinforced collar cutout snugly around the base of the discharge hub until seated flush against the molded locating shoulder without bunching.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,4,0\"\u003e\u003cb data-path-to-node=\"13,4,0\" data-index-in-node=\"0\"\u003eTensioning \u0026amp; Sealing:\u003c\/b\u003e\u003cspan\u003e Pull the fabric upward evenly from both sides to ensure tautness across the 39\" × 50\" face (loose fabric leads to uneven pre-coat cakes and cracking under vacuum).\u003c\/span\u003e\u003cspan\u003e Firmly press the top Velcro flap closed across the upper frame rail.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,5,0\"\u003e\u003cb data-path-to-node=\"13,5,0\" data-index-in-node=\"0\"\u003eMount Felt Collar:\u003c\/b\u003e\u003cspan\u003e Slide a new felt compression collar onto the bottom outlet spud against the locating shoulder before lowering the re-covered leaf back into the Keene-Bowser floor manifold receiver.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":68167895646319,"sku":"DE-BO3950CO","price":415.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/Screenshot2026-11-02115925_68df1253-641c-4f9b-bb96-9fd2e9cb43f4.png?v=1793718367","url":"https:\/\/commercialpoolandspasupplies.com\/products\/mermade-39-x-50-bottom-outlet-keene-bowser-replacement-cover-only","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}