Where Aluminium Earns Its Place
Aluminium is the cost-controlled option in the range, which matters on high-volume residential and public-works bids where a brass viewer would price the door out of the tender. Two models carry the series: 5016-30-55-GA for 30 mm to 55 mm leaves and 5016-50-90-SA for 50 mm to 90 mm leaves. Both use a 16 mm tube, so the drilled hole is identical. Both use a 30 mm head, which the product pages specify for light capture and a wide, clear viewing field on deep-profile doors.
Two Models Cover 30 mm to 90 mm
5016-30-55-GA is the standard-thickness part, 30 mm to 55 mm, in gold aluminium, and its page names budget-friendly housing, high-volume residential projects and standard commercial entries as the target. 5016-50-90-SA is the deep-profile part, 50 mm to 90 mm, in silver aluminium, aimed at thick armoured entry doors and heavy-duty insulated panels. Each is also listed under an LG suffix, 5016-30-55LG-GA and 5016-50-90LG-SA, on the same 16 mm tube and 30 mm head. The deep model is stated to mount without expensive brass couplings.
Fire Rating, Finish and Positioning
Fire rating is optional at 1/3 hour or 1.5 hour, so the same aluminium viewer can go on a rated corridor door without moving up to the steel 4014 series. Finish is the body colour itself, gold for GA and silver for SA, rather than an electroplated layer. The pages position aluminium as a cost-effective alternative to brass for high-volume bids, public works and large property developments. Where a project needs the machined feel of solid brass from 10 mm to 85 mm, the 1012 and 1014 series cover it.
Frequently Asked Questions
Common questions about our door hardware products
5016-30-55-GA covers 30 mm to 55 mm and 5016-50-90-SA covers 50 mm to 90 mm. Both use a 16 mm tube and a 30 mm head.
Yes. A UL fire rating of 1/3 hour or 1.5 hour is optional on both models.
Aluminium is the cost-effective option for high-volume bids, public works and large developments, while keeping the 16 mm tube and 30 mm head. Brass models cover 10 mm to 85 mm where the machined finish is required.