Name: BEST 4900 Series Classroom Function Lever Trim for 2000 Series Exit Devices, Less Cylinder
Brand: BEST
SKU: 4908A 622 RHR
Price: 699.73 USD
Availability: InStock

Product Overview
FAQs

BEST 4900 Series Classroom Function Lever Trim for 2000 Series Exit Devices

Professional Exit Device Trim Solution

The BEST 4900 Series Classroom Function Lever Trim provides coordinated aesthetics and reliable operation for 2000 Series exit devices. This wide stile lever trim features field reversibility for easy installation and vandal-resistant construction with extra strength overload springs and cast stainless steel internal components. The lever automatically returns to the home position with no resetting required, while the recessed cylinder design enhances both security and aesthetics.

Professional Features & Benefits

2000 Series Compatibility: Specifically designed for seamless integration with PRECISION 2000 Series exit devices for complete coordinated solutions.
Vandal-Resistant Construction: Extra strength "overload" springs and cast stainless steel internal components withstand abuse in high-traffic environments.
Automatic Return Function: Lever automatically returns to home position with no manual resetting required for consistent operation.
Field Reversible Design: Easy installation flexibility allows field configuration for left or right-hand applications.
Enhanced Security Features: Recessed cylinder design provides increased security while maintaining clean aesthetics.
Wide Stile Configuration: Designed for wide stile door applications with proper proportional appearance.
Classroom Function Operation: Specialized function provides appropriate access control for educational facility applications.

Technical Specifications

Commercial/Residential: Commercial
Department: Door Hardware
Handle Type: Lever
Product Category: Exit Devices and Trim
Product Function: Classroom
Product Group: Exit Devices and Trim
Product Subgroup: Exit Device Trim
Product Type: Exit Device Trim
Series: 4900 Series
Stile Type: Wide Stile
Subcategory: Exit Device Trim

Installation & Operation

Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

Educational Facilities and Classrooms
Commercial Office Buildings
Healthcare Institutions
Government and Municipal Buildings
Multi-Tenant Residential Properties
Industrial and Warehouse Facilities
Retail Establishments

Why Choose BEST Quality?

BEST 4900 Series lever trim delivers professional-grade reliability with cast stainless steel internal components and vandal-resistant construction designed to withstand demanding commercial applications. The coordinated trim solution provides the same quality and reliability expected from PRECISION exit device systems. Engineered for educational and commercial environments where dependable classroom function operation is essential.

Manufacturer Resources

Precision 2000 Series Catalog

Product Specs

Series:: 4900 Series
Product Group:: Exit Devices and Trim
Product Subgroup:: Exit Device Trim
Product Type:: Exit Device Trims
Subcategory:: Exit Device Trim
Commercial/Residential:: Commercial
Handle Type:: Lever
Stile Type:: Wide Stile
Product Function:: Classroom
Product Category:: Exit Devices and Trim
Department:: Door Hardware

BEST 4908A 622 RHR – Frequently Asked Questions

1) Does classroom function exit trim mean the lever is always locked from the outside?

Classroom function on the 4900 trim means the outside lever is controlled by the key: key the lever to retract the latch and get in, and the lever otherwise stays locked from the outside. Push the touchbar from the inside and you're always out, since the exit device itself is never locked. That's the difference from a passage trim, where the outside lever is always free, and from a nightlatch trim, where there's no lever function at all and the key alone retracts the latch.

2) I bought the 4900 lever trim less cylinder. What cylinder do I still need to order?

Less cylinder means the trim ships without one, so the key cylinder is a separate line on your order. The 4900 uses a recessed cylinder pocket in the escutcheon, which is what keeps the cylinder face protected and flush. Order the cylinder in the keyway and keying your building already uses so the trim ties into your existing system, and match the finish to the trim.

3) Do I have to order the 4900 exit trim in a specific hand?

Handing is on the order form: the 4900 comes LHR (left hand reverse) or RHR (right hand reverse). The trim is also field reversible, so it can be configured on site for the other hand if the door turns out opposite what was ordered. Exit device openings are always reverse bevel, which is why the choices are LHR and RHR rather than plain left and right.

4) Will the 4900 lever trim fit a narrow stile aluminum storefront door?

No. The 4900 is a wide stile trim, sized for the wider stiles on hollow metal and wood doors. On a narrow stile aluminum entrance the escutcheon overruns the stile and crowds the glass. For narrow stile glass doors you want a narrow stile trim built for that stile width instead.

5) What is the closest classroom function lever trim to the BEST 4900 Series if the exit device is not a PRECISION 2000 Series?

The BEST 4900 Series lever trim is built for PRECISION 2000 Series exit devices, so on another device family you need trim matched to that device. For Falcon 24/25 Series devices, the Falcon 510L is a heavy duty classroom function exit device trim with a lever handle. For Falcon 1790 Series devices, the Falcon 179L is a medium duty classroom function lever control trim. Accentra 446F is a classroom function exit device trim with the Augusta lever for Accentra devices. Exit device trim is device-specific: match the trim to the device series on the door, not just to the function.

6) What should I use instead of a keyed lever trim if I want to control the door with a credential or code rather than a key?

The BEST 4900 Series classroom lever trim is a mechanical keyed trim supplied less cylinder. For code or electrified control of the same opening, Dormakaba E-Plex 201U is an electronic pushbutton exit trim for wide stile applications, and the Dormakaba PowerPlex P201U works on rim, mortise, and surface vertical rod devices. For electrified lever trim, Command Access offers ET15, ET25, and ET26 electrified exit trims with 12V and 24V operation and fail safe or fail secure options, the ET26 with Grade 1 construction and field reversible design, plus the 230L electrified trim for Von Duprin 96, 36, and 23 Series. Falcon 510L-FSA/FSE is an electrified heavy duty lever trim for 25 Series devices. Electrified trim needs power to the door; mechanical classroom trim does not.

7) What is the difference between classroom function exit trim and storeroom function exit trim?

Both keep the outside lever locked until a key is used, but they differ in what the key does. The BEST 4900 Series is classroom function, where the key controls whether the outside lever is locked or unlocked. Storeroom function trim keeps the outside lever locked at all times and the key retracts the latch for momentary entry only. Storeroom examples include the Design Hardware KIL storeroom function exit trim for 1000 and 2000 Series devices, the Tell EDELT80 escutcheon lever trim, the Pamex E9000 with L3 lever, and the Marks USA M195F lever and rose trim. Classroom is the choice when staff need to leave the opening unlocked for a period; storeroom is the choice when the door should never be left unlocked.

8) Is a nightlatch exit trim the same as a classroom function trim?

No. Nightlatch trim has no locking or unlocking mode on the outside lever; the key retracts the latch and that is the only outside operation. The BEST 4900 Series is classroom function, where the key sets the outside lever locked or unlocked. Nightlatch peers include the Sargent 704ET field reversible night latch lever trim for 700 Series devices, the Sargent 704-ETL with key retract for PE Series, the Sargent 744 freewheeling trim for 8700 and 8900 Series surface vertical rod and mortise devices, the Corbin Russwin VT957ET nightlatch escutcheon for ED5000 Series, and the Dorma YR03R wide stile night latch lever trim less cylinder. Specify nightlatch only if the door should never be left in an unlocked state from the outside.

9) What is the difference between the M, R, RM, Y and standard trim options on the BEST 4900?

Those are the trim configurations you pick from when ordering the 4900: standard trim, M for mortise trim (matched to a mortise exit device), R for retrofit trim, RM for retrofit mortise, and Y for Precision trim. Retrofit versions matter when you're replacing trim on an existing device and want to reuse the prep already in the door rather than re-drilling; mortise versions go with mortise-type exit devices rather than rim devices. Pick the one that matches the 2000 Series device on the door.

10) Can I get the 4900 exit trim with a knob instead of a lever, and what lever shapes are there?

Five handle designs are offered on the 4900 classroom trim: A, B, C and D levers, plus a K knob. Most commercial and institutional openings take a lever, since a lever is the operable hardware people expect on a school or office door. The K knob is there for buildings standardizing on knob hardware throughout.

11) Which exit trim holds up best on a high abuse school or dorm door?

The 4900 is built for abuse: extra strength overload springs and cast stainless steel internal components, so a lever that gets yanked or hung on gives at the spring instead of breaking the works. The lever returns to home on its own with nothing to reset afterward. That plus classroom function is why it lands on educational and multi-tenant openings.

12) What else can I use if I need classroom function exit device trim but not for a Precision 2000 device?

Classroom function trim is device specific, so match the trim to the device you have. In classroom function from other makers, ZenSupply carries the Falcon 510L heavy duty trim for 24/25 Series devices, the Falcon 179L for 1790 Series, the Accentra 446F Grade 1 Augusta lever trim, and the Dexter ED1000T classroom thumbpiece and pull plate trim (also less cylinder) if you want a thumbpiece instead of a lever.

13) I am replacing broken lever trim on an existing 2000 Series device. Do I have to re-drill the door?

Order the retrofit version and you usually don't. The 4900 offers R (retrofit trim) and RM (retrofit mortise) configurations alongside the standard and M mortise trims, which is what you specify when you're swapping trim onto a device already hung on a prepped door. Field reversibility helps here too, since you can set the hand on site to match whatever is in front of you.

14) If the opening does not need a cylinder at all, what exit device trim replaces a classroom lever trim?

Classroom function trim like the BEST 4900 Series is keyed, so if the opening never needs a key, a passage or dummy trim is simpler. Passage function trim leaves the outside lever always operable: Corbin Russwin offers passage function trim for its ED300 Series, ED4000 Series, and ED5200S/ED5200/ED5400/ED5800 Series devices, Arrow SRX01 is a passage function Sierra lever with rose for ED910, S1150, and S1250 devices, and Von Duprin E360L-BE-03 is an electric passage trim with the 03 lever for 33/35A Series. If the outside trim should not operate the device at all and exists only as a pull, dummy trim such as the Von Duprin 230DT for 22 Series or the Detex 02BN dummy S-lever with blank escutcheon covers that.

15) Can I use a pull trim or thumbpiece trim instead of a lever trim on an exit device?

Only if the opening does not need a lever. The BEST 4900 Series is lever trim with a range of lever designs, A, B, C, D, and a K knob. Pull and thumbpiece alternatives include the Tell exit device pull trim with cylinder hole supplied less cylinder, the Design Hardware 2P-03NL pull trim with cylinder hole in night latch function for 1000R and 2000R devices, the Dexter ED1500 Series nightlatch trim with raised lip pull plate, and the Tell EDTHP53 thumbpiece trim in keyed entry function. Dexter also lists ED1000T-CLRM-TP-NC, a classroom function trim using a thumbpiece and pull plate less cylinder. A lever is the usual choice where accessible operation is required, since a pull or thumbpiece is operated differently.

16) What exit device trim should I look at for a keyed entry opening rather than a classroom opening?

Entry function trim locks and unlocks with a key or a button and is aimed at tenant and office doors rather than the lock-down behavior classroom function gives an educational opening. The BEST 4900 Series is classroom function. Entry function peers include the Design Hardware KIL entry function trim for 1000 and 2000 Series exit devices with a Schlage C keyway and flat lever, the Design Hardware LE08 entry function trim with flat lever and escutcheon for 1000R and 2000R devices, the Tell EDELT53 escutcheon lever trim in keyed entry function, and the Delaney 500L exterior trim in entrance function, offered in CT, MD, and SD lever styles.

17) Which exit device trims carry a Grade 1 rating for a high traffic school or institutional door?

For institutional standardization, the Grade 1 trims in the comparable set include the Dexter ED1500T Series with regular lever, the Dexter ED1000T classroom thumbpiece and pull plate trim, Design Hardware KIL entry and storeroom function trims, the Pamex E9000 storeroom trim with a 1-3/8 inch to 2 inch door thickness range, Sargent 704ET and 704-ETL night latch lever trims, Sargent 744, Command Access ET26, and Von Duprin 210K-BE and 230DT for 22 Series. The BEST 4900 Series answers the same abuse concern through construction: extra strength overload springs, cast stainless steel internal components, and a recessed cylinder design for wide stile doors.

18) I need lever trim for a wide stile aluminum door. Which trims are built for wide stile applications?

The BEST 4900 Series is a wide stile lever trim, offered in LHR and RHR handing with field reversible construction and in finishes from 605 bright brass through 630 satin stainless steel and 622 matte black. Other wide stile options include the Dorma YR03R wide stile escutcheon lever trim in night latch function less cylinder, and the Dormakaba E-Plex 201U electronic pushbutton exit trim, also wide stile. Confirm stile width against the device on the door before ordering, since narrow stile openings take a different trim entirely.

19) What finishes does the BEST 4900 classroom lever trim come in for matching the rest of my building?

Eight finishes: 605 bright brass, 606 satin brass, 612 satin bronze, 613 satin bronze oil-rubbed, 622 matte black, 625 bright chrome, 630 satin stainless steel and 690 statuary dark bronze. For a school or office standardizing across openings, 630 satin stainless is the usual commercial default and 626-family satin chrome looks close to it; if your other doors are dark bronze, 613 and 690 are the two bronze tones to compare against the existing hardware before committing a whole floor.

20) Is the 4900 lever trim the part that locks the door, or does the exit device do that?

The 4900 is the outside trim, the escutcheon and lever with a cylinder pocket that mounts on the pull side of the door. The latching is done by the 2000 Series exit device on the push side; the trim is how someone with a key gets back in through it. You need both parts on the opening, and the trim alone won't secure a door.

21) Is a blank escutcheon trim an alternative to a classroom lever trim?

Not for a door that needs outside access. A blank escutcheon has no cylinder and no operating handle, so the door is exit only from the inside. The Falcon 212L is a 20 Series escutcheon lever trim in blank escutcheon configuration, and the Von Duprin 210K-BE pairs a knob with a blank escutcheon for 22 Series devices. The BEST 4900 Series classroom lever trim is the opposite specification: a keyed lever that lets authorized staff work the door from the outside and set it unlocked when class is in session.

How fast can I get the BEST 4908A 622 RHR delivered?

Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.

Can I return it if it doesn’t work for me?

Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.

Does the BEST 4908A 622 RHR come with a warranty?

Absolutely. The BEST 4908A 622 RHR is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.

How do I get technical support or installation help for the BEST 4908A 622 RHR?

You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us

Why buy the BEST 4908A 622 RHR from ZenSupply?

ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

BEST 4900 Series Classroom Function Lever Trim for 2000 Series Exit Devices, Less Cylinder

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