Electricity that flows in one direction.

A large (generally 20 Amp) electrical ON-OFF switch.

The maximum voltage a dielectric (nonconductor) can withstand without fracture.

The reporting by manufacturers about product ingredients, impacts, or other attributes to the public or to third parties. https://healthymaterialslab.org/tool-guides/hml-resources

Lumber from 2 inches (50.8 mm) up to, but not including, 5 inches (127 mm) thick and 2 inches (50.8 mm) or greater in width.

A horizontal roof or floor structural element designed to resist lateral loads and transmit them to shear walls (vertical resisting elements).

Pumping subsurface water from an excavation to maintain dry and stable working conditions.

According to the World Health Organization, dioxins are some of the most potent toxins known to humans, with no known safe limit for exposure and a strong propensity for bioaccumulation. In addition, dioxins are highly persistent in the environment. https://healthymaterialslab.org/tool-guides/hml-resources

A mortgage interest rate that is lower than the current rate for a certain period of time, e.g. 2.00% below variable rate for 2 years.

A circular, square, or rectangular air distributing outlet, usually in the ceiling, that has members to discharge supply air in several directions, mixing the supply air with the secondary air in the room.

The surrounding case into which and out of which a door closes and opens. It consists of two upright pieces, called side jambs, and a horizontal head jamb. These 3 jambs have the "door stop" installed on them.

An opening in a sloping roof, the framing of which projects out to form a vertical wall suitable for windows or other openings.

- The wooden style that the door slab will rest upon when it's in a closed position.

- An automatic garage door opener.

Structural element of a door opening. May be the same element as the frame if frame is structural, as in the case of heavy steel frames.

Window sash that slides vertically and is offset in a double track.

T-shaped precast floor and roof units that span long distances unsupported.

A window with two vertically sliding sashes, both of which can move up and down.

Two parallel sheets of glass with an air space in between.

Window or door in which two panes of glass are used with a sealed air space between. Also known as Insulating Glass.