Sargent NB-8743 ETL Surface Vertical Rod Exit Device, Less Bottom Rod – Freewheeling Classroom Lever Trim, Non-Rated, Grade 1
The Sargent NB-8743 ETL is the less-bottom-rod (NB) version of the Sargent 8743 surface vertical rod exit device. It latches at the top only, into a 646 top strike. There is no bottom rod, bottom latch or bottom strike, so there is no floor strike to trip over. A key outside engages or disengages the freewheeling ET lever. The lever rotates when locked. This listing is the non-rated panic device. The fire-labeled 12-NB sibling is a separate listing.
Institutional Grade Features & Benefits
- Freewheeling classroom function 43: key outside engages or disengages the lever. The lever rotates when locked. Inside rail is always free for egress.
- NB = less bottom rod: single-point top latching with the 646 top strike. Top latchbolt projection adjusts through the center case.
- Outside trim: 743-8 ET control with the L lever. The NB-8700 takes the -8 ET control trims, not the standard 8700 trims. #41 cylinder is supplied with the LA Keyway option.
- ANSI/BHMA A156.3 Grade 1. UL305 panic. This page is not the fire-labeled device.
- Wide-stile surface vertical rod device for wood or metal doors, 1-3/4 inch minimum thickness. The NB-8700 chassis is handed; order LHR or RHR.
- Rail lengths E, F, J, and G for 24 inch, 36 inch, 42 inch, and 48 inch doors.
- Door/opening height must be specified on the order. 120 inch maximum door opening.
- 55- rail signal switch and 56- motorized latch retraction are catalog prefixes on this family. 56- needs a 28 inch minimum door width on a wide-stile device. 59- Electroguard is not available on NB devices.
- Keying options on this listing: LA Keyway with a #41 cylinder supplied (2 keys per cylinder); LC Less Cylinder; 60 LFIC less core; 70 SFIC less core.
- Finishes on this listing: US32D Satin Stainless Steel / BHMA 630; US3 Polished Brass; US4 Satin Brass; US10 Satin Bronze; US10B Oil Rubbed Bronze; US10BE Oil Rubbed Bronze Equivalent.
Outside Trim Function: Freewheeling Classroom (Function 43)
The 743-8 ET outside lever on this NB-8743 uses the freewheeling classroom function:
- Key Operation: A key in the outside cylinder engages or disengages the outside lever.
- When Locked: The outside lever rotates and does not retract the latch.
- Free Egress Always: Pushing the inside rail always retracts the top latch.
- Keying: LA Keyway with a #41 cylinder supplied (2 keys per cylinder); LC Less Cylinder; 60 LFIC less core; 70 SFIC less core.
- Lever: L design on every listing in this combined page.
Technical Details
| Feature | Details |
|---|---|
| Device | NB-8743 ETL wide-stile surface vertical rod, less bottom rod (NB) |
| Latching | Top latch only, 646 top strike. No bottom rod, bottom latch or bottom strike |
| Function | 43 Freewheeling classroom -- key engages/disengages lever, lever rotates when locked |
| Trim | 743-8 ET control, L lever |
| Fire class | Non-rated |
| Grade | ANSI/BHMA A156.3 Grade 1 |
| Listing | UL305 panic |
| Handing | LHR or RHR (NB-8700 chassis is handed) |
| Rail | E 24 in, F 36 in, J 42 in, G 48 in door |
| Door height | Must be specified. 120 in maximum door opening |
| Keying | LA Keyway with a #41 cylinder supplied (2 keys per cylinder); LC Less Cylinder; 60 LFIC less core; 70 SFIC less core |
| Finish | US32D Satin Stainless Steel / BHMA 630; US3 Polished Brass; US4 Satin Brass; US10 Satin Bronze; US10B Oil Rubbed Bronze; US10BE Oil Rubbed Bronze Equivalent |
| General - US Finishes | US32D - Satin Stainless Steel/ 630 or US3 - Polished Brass or US4 - Satin Brass or US10 - Satin Bronze or US10B - Oil Rubbed Bronze or US10BE - Oil Rub Bronze Equal |
| Sargent Keyways | LC - Less Cylinder or LA Keyway or 60 - LFIC less Core or 70 - SFIC less Core |
| Sargent Exit Device Rail Length | F - 36" Wide Door or J - 42" Wide Door or G - 48" Wide Door or E - 24" Wide Door |
| Door Handing | RHR or LHR |
| Sargent Exit Device Prefixes | 43 - Flush End Cap or 53 - Latchbolt Monitor Switch – available with 55, 56, 58, AL options) or 54 - Outside Lever Monitoring (not available with 04/10 function) or 55 - Signal Switch in Rail or 56 - Motorized Electric Latch Retraction (Minimum door width for narrow & wide stile is 28") or 58 - Electric Dogging |
| Brand | Sargent |
| Series | Sargent - 80 Series, Sargent - 700 ET Series |
| Exit Device Type | SVR LBR Device |
| Exit Device Fire Rating | Non Rated Door |
| Exit Device Trim Function | Freewheeling Classroom |
| Door Height | 7'0" Dr Ht |
| Door Opening Width | 24 Inches, 36 Inches, 42 Inches, 48 Inches |
Sargent 80 Series Catalog
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Sargent 80 Series Parts Manual
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Sargent NB8700 Installation Instructions
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Sargent NB-8700 Template for Pair of Doors
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Sargent 700-8 ET Control Trim Template for NB8700
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Sargent 80 Series Electromechanical Options Template
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43 Prefix Instructions
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53 Prefix Instructions
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