The ED8900 is a narrow stile rim device and needs a minimum stile width of 4-3/4 inches (120mm). Measure the lock stile on your storefront door: at 4-3/4 inches or wider it mounts; anything narrower and you need a different device. It is rated for commercial, heavy duty service, which is what a high-traffic entrance door asks for.

Handing is not a decision you make on the ED8900. Every device in the 8900 Series is non-handed or reversible, so one part number covers a left hand or right hand opening. That is useful if you are stocking spares for a building with doors swinging both ways, since one device on the shelf covers either.

Grade 1 under ANSI/BHMA A156.3, the highest of the three grades and the one written into most institutional and commercial specs. It also meets the requirements of the Americans with Disabilities Act and the guidelines of the Buy American Act, which matters if you are buying for a government, school, or healthcare facility with domestic sourcing language in the spec.

No. The 8900 Series needs 4-3/4 inches (120mm) of stile minimum, so a 4 inch stile is too narrow and the device will overhang the glass stop. On very narrow aluminum stiles, look at the Adams Rite narrow stile interlocking rim devices such as the 8700 or EX88 Series, both Grade 1 narrow stile designs built for that kind of storefront door.

For a labeled opening, the Adams Rite 3700 Series is a fire rated Grade 1 narrow stile rim exit device, offered in a 30 inch size and compatible with wood doors. The Arrow FS1250 is a fire rated 32 inch rim exit device for 1-3/4 inch doors, and the Orca OED85 is a fire rated 36 inch rim exit device in an exit only function. The TownSteel ED8900 carries a Grade 1 rating and UL/cUL listing under UL 305 for panic hardware, but it is not fire rated, so it belongs on a non-labeled exit.

The TownSteel ED8900 is not wood door compatible, so it is specified for aluminum and hollow metal openings. Adams Rite lists wood door compatibility on two narrow stile rim devices: the 8700 Series, Grade 1 and non fire rated in a 30 inch size, and the fire rated 3700 Series, also Grade 1 at 30 inches. Both use starwheel interlocking. Most of the other rim devices in this class - the Corbin Russwin ED4200, Falcon 19-R, and Arrow ED910 among them - are also listed as not wood door compatible.

The Corbin Russwin ED4200 is the nearest match: a Grade 1 narrow stile rim exit device in a 36 inch size, fitting doors 1-3/4 inch thick, with an exit only and accepts trim function. The Falcon 19-R is another Grade 1 narrow stile rim device at 36 inch, exit only, for 1-3/4 inch doors. Both share the ED8900's Grade 1 rating and narrow stile format for aluminum and hollow metal storefront openings; the ED8900 is a heavy duty non-handed device that is not compatible with wood doors.

Stile width is the deciding factor. The ED8900 is a narrow stile device with a minimum stile width of 4-3/4 inches (120mm), sized for aluminum storefront and other narrow framed doors. The Von Duprin 22-3FT is a Grade 1 wide stile pushpad rim device, 36 inch and non-handed, for 1-3/4 inch doors, and the Corbin Russwin ED5200 is a Grade 1 wide stile rim device at 36 inch for the same door thickness. Wide stile devices need more face width on the door leaf than a narrow storefront stile provides, so measure the stile before choosing between them.

No - they solve a different problem. The SDC MSB550 is a 36 inch mechanical switch bar that releases an electromagnetic lock, and the SDC SureExit PSB560 is a 36 inch pressure sense bar with tri-failsafe technology; both fit narrow or wide stile doors. Those bars signal a separate locking device rather than carrying their own latch. The TownSteel ED8900 is a mechanical rim exit device with its own shock-resistant latching mechanism, Grade 1 certified and UL 305 listed. If the opening is held by a maglock, the SDC bars belong there; if the door needs a latching panic device, the ED8900 does.

A rim device like the ED8900 latches into a strike on the frame at the lock stile, so it works on a single door or on the active leaf of a pair with a mullion. It is the simplest install of the exit device types, with nothing running to the head or the floor. If you have a pair of doors with no center mullion, a rim device will not secure it and you want vertical rod hardware instead: the Hager 4601 Series is a narrow stile concealed vertical rod device, and the Hager 4501 is the wide stile pushpad version.

The ED8900 is a mechanical rim device, not an electrified one. If the opening ties into a card reader or an access control system, look at the SDC S6136 Spectra electrified rim exit device for 1-3/4 to 2 inch doors with a 4 inch wide stile, the SDC MSB550 mechanical switch bar for electromagnetic lock release, or the Dormakaba electrified 36 inch rim device with 4908A classroom trim.

The Detex 40 Advantex Series is a narrow stile rim exit device listed at extra heavy duty with a Grade 1 rating. The TownSteel ED8900 is Grade 1 and heavy duty, with a high shock-resistant latching mechanism and internal components of electro-plated steel and corrosion-resistant alloy. Both carry the same ANSI grade; the Detex 40 sits a step higher on duty classification, which is the distinction to weigh on a school or transit entrance cycling constantly.

They are not an equal-for-equal swap on rating. The Cal-Royal 5000 is a 36 inch wide rim exit device with a touch bar on a Grade 2 chassis, heavy duty and not fire rated, and the A9800 Series 36 inch exit only rim device is also listed Grade 2 heavy duty. The TownSteel ED8900 is ANSI/BHMA A156.3 Grade 1 certified and narrow stile. If a facility standard or a drawing calls for Grade 1 narrow stile, the Cal-Royal devices will not satisfy it; if the specification only calls for a heavy duty rim device on a wider stile, they are in the same duty class.

The Sargent 8504 is a Grade 1 narrow stile rim exit device built in a night latch function, where a key from the outside retracts the latch. The TownSteel ED8900 is a Grade 1 narrow stile device of non-handed, reversible design. For an opening that needs both free egress and keyed outside entry on the same device, the 8504 answers that function directly; the Corbin Russwin ED4200 is a Grade 1 narrow stile device listed as exit only and accepts trim, meaning outside trim is ordered alongside it.

Within Grade 1 narrow stile rim hardware, the set includes the Corbin Russwin ED4200 at 36 inches, the Falcon 19-R at 36 inches exit only, the Detex 40 Advantex at extra heavy duty, the Sargent 8504 in a night latch function, and the Adams Rite EX88 interlocking rim device. The TownSteel ED8900 is Grade 1, heavy duty, non-handed or reversible, and is offered in 622 flat black, 630 satin stainless steel, 689 aluminum, and 695 duro finishes, so a single finish can be carried across a facility.

Four finishes on the ED8900: 622 flat black, 630 satin stainless steel, 689 aluminum, and 695 duro. For matching a run of storefront doors, 689 aluminum is the usual match to clear anodized aluminum frames and 630 satin stainless the match to stainless pulls and closers already on the opening.

The Falcon 1590EO and the Falcon 1790EO are both Grade 1 narrow stile rim exit devices offered at 42 inches, exit only, for 1-3/4 inch doors. The Arrow 4800 Series is a 36 inch narrow stile exit only rim device for 1-3/4 inch doors, matching the TownSteel ED8900 at 36 inches. Bar length should follow the door width so the pushpad covers the required portion of the leaf.