Zero International 8303AA Jamb Perimeter Weatherstrip Set – Silicone, 240", Clear Anodized

Yes. The Zero 8303AA jamb perimeter seal set is fire-rated to UL10C and also serves as smoke and draft control gasketing, so it can go on a labeled opening where the fire door assembly calls for a perimeter seal. It carries ANSI/BHMA R3E164 as its product code.

You cut it. The 8303AA ships as a full-length set at 240 inches and is field-cut to size, so one set covers a standard head and both jambs with the installer trimming each leg on site. The aluminum retainer cuts with a miter saw and a non-ferrous blade; trim the silicone insert to match.

Silicone is the right pick for sound. The Zero 8303AA is a silicone-insert perimeter set, and Zero's adjustable perimeter sealing systems are meant for sound control work. Silicone also stays flexible across a wider temperature swing than vinyl, which is why it is what gets specified on fire and smoke openings. If you only need weather or light seal and there is no acoustic or fire requirement, a vinyl set like the NGP 155V perimeter seal is the simpler answer, and a nylon brush seal such as the NGP 602A is for dust and traffic rather than sound, it will not seal air.

No. This is a jamb perimeter set, so it seals the head and the two jambs only. The gap under the door still needs a separate door bottom, sweep, or automatic door bottom, and on a rated opening that bottom seal has to be rated as well. If you are also dressing the sill, a door shoe such as the Cal-Royal PG-601 aluminum channel gasketing handles the bottom edge.

The nearest peer for an aluminum-housed perimeter seal is the NGP 108NA, a neoprene sponge seal in an anodized aluminum frame, which matches the 8303AA on housing material and finish family. The difference is the sealing element: the 8303AA carries a silicone insert, while the 108NA uses neoprene sponge rated for a temperature range of -20 F to 200 F. Cal-Royal's PG-601 is the other close aluminum-channel perimeter gasket, using a vinyl insert instead. For openings where the silicone element was specified for fire and smoke performance, the 8303AA is the one carrying UL10c fire rating and smoke and draft control.

No. The 8303AA is a silicone perimeter set carrying UL10c fire rating and smoke and draft control, and those certifications belong to the specific seal assembly, not to perimeter gasketing as a category. The NGP 155V is a vinyl perimeter seal in a mill aluminum frame, and the Cal-Royal PG-601 is an aluminum channel gasket with a vinyl insert; both are commercial perimeter seals, but a vinyl-insert product is not a drop-in for a silicone seal specified against a fire and smoke listing. On a labeled opening, stay with the seal that carries the listing.

Compression perimeter sets like the 8303AA rely on the door closing against a silicone element mounted at the jamb. Where the door does not compress cleanly against a stop, the NGP 602A nylon brush seal in an anodized aluminum housing sweeps the gap rather than compressing it, and the NGP 159MA magnetic seal in anodized aluminum pulls a steel door tight to the frame magnetically instead of by compression. Note the 159MA is furnished at 84 inches, while the 8303AA set comes full length at 240 inches and is field-cut to size, so cut planning differs between them.

No. The NGP 602A is a nylon brush seal in an anodized aluminum housing, a sweeping seal that lets air pass through the filament bundle, which is why brush is used for dust, light, and debris rather than smoke. The Zero 8303AA is a silicone compression perimeter set carrying UL10c fire rating and smoke and draft control. If smoke and draft control is on the door schedule, the brush product is not the substitute, even though both mount to the frame in an aluminum carrier.

AA is the finish code for clear anodized aluminum. That is the finish the 8303AA set ships in, and it is the usual choice when the frame is aluminum or painted and you want the retainer to disappear against it.

Different sealing mechanism. The 8303AA uses a compression silicone insert in an aluminum retainer, adjustable so you can dial in the squeeze against the door face, and it is UL10C fire rated with smoke and draft control. The NGP 159MA is a magnetic seal in anodized aluminum, which pulls to a steel door for a tighter acoustic close but requires a ferrous door face or a strike plate to attract to. On an aluminum or wood door, magnetic is out and the silicone compression set is what you use.

Yes, that is the point of the design. Zero perimeter seals are adjustable sealing systems, so once the retainer is fastened you can move the seal in or out to take up an uneven gap along the jamb, which is common on a hollow metal frame that has racked. That adjustability is also what makes it work as a sound seal, since acoustic performance depends on continuous even contact rather than the material alone.

Treat it as a full replacement, not a drop-in insert. The 8303AA is a complete set: silicone insert plus clear anodized aluminum retainer, cut and fastened as one. Zero, NGP, and Cal-Royal retainers use different insert profiles, so a Zero silicone insert will not seat in an NGP 108NA or Cal-Royal PG-601 housing. Pull the old retainer and install the whole 8303AA set instead of trying to swap just the seal.

The Zero 8303AA is furnished in clear anodized aluminum. Among comparable perimeter products, the NGP 108NA neoprene sponge seal and the NGP 602A nylon brush seal both use anodized aluminum housings, and the NGP 159MA magnetic seal is anodized aluminum as well. The NGP 155V uses a mill aluminum frame, which is the unfinished mill look rather than anodized, so it will read differently against anodized frames on adjacent doors.

Both are aluminum-framed perimeter seals, and the choice comes down to the element. The 8303AA uses a silicone seal, the material commonly specified where the seal has to stay flexible across a wide service range and where a fire and smoke listing is required; it is rated UL10c with smoke and draft control. The NGP 108NA uses neoprene sponge and is published for a temperature range of -20 F to 200 F. Both are commercial door products; specify by which element your opening schedule calls out.

The 8303AA is furnished full length at 240 inches and field-cut to size, so one set can be cut to suit varying jamb and head dimensions on site. The NGP 159MA magnetic seal is furnished at 84 inches, a fixed length tied to that piece. On a job with mixed opening sizes, the field-cut approach of the 8303AA changes how you count material against the openings.

This is commercial-grade gasketing. The 8303AA is built for commercial hollow metal and aluminum frames, mounted to the stop face of the jamb, and it is what gets specified on rated and acoustic openings in institutional buildings. It will physically install on a residential door with a flat stop, but the set length and the anodized aluminum retainer are sized and priced for commercial work.