Unitherm FPW4218 - 12" x 42" L Fiberglass Insulated Pipe Jacket 3" Wall
Unitherm FPW4218 - 12" x 42" L Fiberglass Insulated Pipe Jacket 3" Wall
Call 850-565-3492 for live factory inventory, lead times & emergency freight options.
Couldn't load pickup availability
Ships factory-new in original packaging.
Not sure if a compatible flange, seal kit, or accessory exists for this item? Ask our team — we're happy to help you find the right part.
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Commercial Ordering FAQ
How do I verify that Unitherm FPW4218 - 12" x 42" L Fiberglass Insulated Pipe Jacket 3" Wall is the correct replacement part for my equipment?
Check the OEM part number (FPW4218) against your equipment nameplate or the manufacturer's repair parts list before ordering. If you are not sure, call the National Boiler Supply order desk at 850-565-3492 and we can cross-reference your equipment model and serial numbers before the order ships.
What are the shipping and freight options for UNITHERM orders?
Standard parcel orders ship quickly from commercial distribution centers. Shipping is a $35 flat rate on orders under $999, and qualifying orders of $999 or more ship free by ground. Heavy equipment that has to move by LTL freight is quoted after the order is placed and confirmed with you before dispatch.
Can contractors or facility managers request a formal quote or use a Purchase Order (PO)?
Yes. National Boiler Supply works with commercial contractors, mechanical engineers, municipalities, and facility teams. Call 850-565-3492 for a formal quote, bulk pricing, or PO and tax-exempt order processing.
What if this UNITHERM part is marked Call to Order or needed for an emergency repair?
Call our order desk at 850-565-3492. We can confirm factory lead times right away and arrange expedited air or hot-shot delivery when a repair cannot wait.
Insulated Pipe Jacket, Cover Type Flange Jacket for Straight Sections, For Fitting Type Tee, Wye, Jacket Material Silicone, Insulation Material Mineral Wool, Maximum Ambient Temperature 200 Degrees F, Cover Width 18 in, Cover Length 42 in, Thickness 3 in, Color Gray, Fastening System Lacing Anchor; Wire, For Minimum Circumference 31 in, For Maximum Circumference 38 in, R Value 0.48, Operating Voltage 120V, For Valve Type Manifold, Standards OSHA Safe-Touch, Cable Gauge 18 AWG
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.