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The PRO-SOURCE MB704036 is a back strip brush designed for edge sealing, gap filling, and light debris exclusion in industrial and commercial applications. The brush features a 5/16 inch wide stainless steel back strip that serves as the mounting spine, with stainless steel bristles extending 1 inch in length. The overall length of 36 inches makes it suitable for door sweeps, machine guards, conveyor guides, and similar linear installations. Technicians and maintenance professionals working in corrosive or high-humidity environments benefit from the all-stainless steel construction, which resists rust and chemical exposure without degrading bristle performance.
This back strip brush is suited for HVAC cabinet sealing, electrical panel entry points, plumbing chase closures, and general industrial gasketing where a flexible, durable bristle barrier is needed. The 36 inch length allows the brush to be cut to fit standard door frames, equipment enclosures, or custom channel mounts. It is commonly installed in commercial and light industrial settings where maintaining an air seal or blocking pests, dust, and drafts along a linear gap is required.
Designed as an OEM-style replacement or new-installation strip brush for standard 5/16 inch back strip brush channels used in door sweeps, machine guards, conveyor guides, and equipment enclosure seals.
Back strip brushes are typically installed by maintenance technicians or general contractors using channel-mount retainers, screws, or adhesive backing appropriate to the substrate. Ensure the mounting surface is clean and free of debris before securing the brush. The 36 inch strip can be cut with tin snips or a metal-cutting blade to achieve the required length. Follow applicable building codes and equipment manufacturer guidelines when using strip brushes as part of an air or pest seal assembly.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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