New Style 90 degree HOPPE profile cylinder with Cresent Knob 

Used on doors that are 2-1/8 to 3 inches thick
Overall housing Length: 35.5mm / 45.5mm (3-1/8 inch)

The New Style 90 degree allows homeowner to look at thumb turn and know if door is locked or unlocked.

This cylinder can be converted into a 360 degree cylinder (see article link below).

Typically used on panels that are 2-1/2 thick.
Some finishes are a Resista : No-Tarnish Finish

Measurements:
Inside Distance = 1-3/8 inch (35.5mm)
Outside Distance = 1-3/4 inch (45.5mm)
Overall (inside + outside) = 3-1/8 inches (81mm)

Installation Instructions:
1. Remove Thumb Turn
2. Insert Aux. Tool and pull down on Release Tab
3. Turn cam and insert into lock.
4. Replace Thumb turn.

Color / Finish Options:
Rustic Umber (F8709)
Oil Rubbed Brass (F79)

(No Tarnish Finishes)
Polished Brass (F77-R)
Brushed Chrome (F41-R)
Satin Nickel (F42-R)

NOTE:
Some colors may be special order, resulting in longer shipping times.

Article:
HOPPE Cylinder Installation and Rekeying